Malicious PDF — malware analysis report

Static analysis result for SHA-256 07cd1a78b32db469…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 23:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cde12d9242fcc4c58c7e92dac89b23ad SHA-1: 78783415ba402f05e2e37bc918fd2df4091457a9 SHA-256: 07cd1a78b32db469da3c9c40d56e00aaa19523703b8b466473219bfaded28ca0
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn links to various PDF files, some of which are hosted on benign platforms but others on suspicious domains. The presence of a 'download button' lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=abstract+and+concrete+nouns+worksheets+for+grade+4+pdf In PDF document text
    • http://rururuviv.biglittlebrains.com/uploads/1/3/1/4/131437987/muwibefajokotaz_binukelabufud.pdfIn PDF document text
    • http://files.polesworthpoetrytrail.org/uploads/1/3/1/4/131438776/kugizoribati.pdfIn PDF document text
    • http://files.kkstechtips.com/uploads/1/3/2/6/132683484/lodusipawuneva-rotafivuwexil-mekopegagopumak.pdfIn PDF document text
    • http://files.rivalgates.com/uploads/1/3/0/7/130739204/452accfd156.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/jusisaposokimerufobarupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/wopekupalutuwibeluxojoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/50839403431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/gosejalemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/23444406572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0646/6975/files/atar_notes_legal_studies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/nepupexojobufadazexur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9972/3678/files/begutimadexadufotojugojid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/lopisixidominiwapozex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/ansi_z535_safety_color_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/46826630700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/53625605356.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2E 5756 bytes
SHA-256: fd921d5a23c8a9a5f625cb77cfdabdd0f5d265ecc8cf4e0de52f93365eed78a4
font_01_sfnt_off000060d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D0 9852 bytes
SHA-256: e5240a97a75b7d04cd07c794e35e47064ec4b682b327fdb21537415e5af2bd2f

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