Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e310a20394d0882…

MALICIOUS

PDF

55.7 KB Created: 2020-10-25 22:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 30479b07bdaa7a1bd14247091ddd70a6 SHA-1: e5463c155d9d581e254c8308be50a5dd602377db SHA-256: 1e310a20394d0882498f1b7c972f829be968e93cac7e8e0d3a13e0a21c707f99
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to a URL that appears to be a lure for downloading software. The document body, though heavily obfuscated, contains a similar URL. The presence of numerous links, many pointing to disposable hosting, further supports a link farm or redirection scheme designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/123?keyword=descargar+geometry+dash+sub+zero+full+apk In PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/885082.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/fowitedaduvim_juremidegaliraw_susadedaliwab.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/6842238.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/zenudi_muvagubanetive.pdfIn PDF document text
    • https://sowameneritela.weebly.com/uploads/1/3/0/7/130775755/javixokonojudebarum.pdfIn PDF document text
    • https://porujigiwafixuf.weebly.com/uploads/1/3/4/3/134373975/405fb5bc5f.pdfIn PDF document text
    • https://jifilebipik.weebly.com/uploads/1/3/4/3/134375607/wubuserimiw.pdfIn PDF document text
    • https://kebakiwaranug.weebly.com/uploads/1/3/4/3/134317860/f83d7097e9d.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/kagederepikipapod.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/vuzerexokigigoretoti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0491/5540/8071/files/affinity_designer_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5395/files/40894741399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/fresco_menu_at_taco_bell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211d7d10-aced-4dfe-afea-c4c82dc49c06/30281075703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/762faf7a-7809-4b19-87b1-ba56d841196b/combat_hapkido_techniques.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bca8235e-3f62-4aac-920c-7f983546c65d/descargar_adobe_premiere_pro_cs6_ful.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a3f4620-50d3-42e2-9d91-17e9b294c471/84341507729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e07789-5088-4682-b21c-ffd962e283d6/44029594224.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/dozugetuwozofurawomaxer.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/saxapasunibunatet.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/kikoji.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/55358121224.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 4364 bytes
SHA-256: a97604f167956313d6055d9e936ce384a3d786044efbf5a41a73b67581220bb1
font_01_sfnt_off0000763b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763B 5652 bytes
SHA-256: b14c118b0bcd94c6cffa9d38560a8e195e1f49b983d6ada54621d2db5a6c3aed
font_02_sfnt_off0000898a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898A 10500 bytes
SHA-256: 3ce2994388e8b8580154002fc480009e52d00881b4c328e3eef0b5caecfda119
font_03_sfnt_off0000ad95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD95 16104 bytes
SHA-256: ea2a42892dffc6b9fe7c307268abf3f97fb4907571b9c1207ef1a69fcb01c664
font_04_sfnt_off0000c267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC267 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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