Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5bbdbfe6a0b219…

MALICIOUS

PDF

40.4 KB Created: 2020-10-06 19:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a67b939f4536fd34b578433b74c0d2eb SHA-1: 806e6b4619c65b2c0194ca884f1aee9c7a00d1a6 SHA-256: fa5bbdbfe6a0b21913e3d0b529556f70b671be21f3f6266534b286c028df061c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://ggtraff.ru/pify?keyword=spuds+mackenzie+dog+value In PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/masufedovitijojanelikijoj.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/dinofimugifudedimikuf.pdfIn PDF document text
    • https://site-1038758.mozfiles.com/files/1038758/devinevojezavajepukuvexa.pdfIn PDF document text
    • https://site-1036925.mozfiles.com/files/1036925/mujopujugemaxupuk.pdfIn PDF document text
    • http://files.angusmaciverbuildingsupplies.co.uk/uploads/1/3/1/4/131453706/4054652.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/49bdcf84-a3c3-4ea9-940c-0405022587e1/rufediboradizobunina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d314254-ab6b-48c5-9342-2205c7973271/74752720549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5656996-b5a6-4345-9e46-185b37ae80c3/zexezijufesobalilixitubor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51b10d5-10a6-4faa-9821-49586e91b087/wimekejemujejigubupeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f163eaff-85e4-424c-95fa-78e6019475ca/53570037099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1874/3719/files/gekedabizepuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5549/6347/files/hit_or_miss_engine_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9128/7452/files/vasuzonoxiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8484/3682/files/68600707518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8420/9056/files/lovecraft_cats_of_ulthar.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_off00005d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D18 5572 bytes
SHA-256: f1b3649cf8ff02ffadd88b16a6178ba40487f869e286ea764558792c2ef4d0dc
font_01_sfnt_off00007010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7010 10672 bytes
SHA-256: 5e07a9f89f2c5e328151188e480b602655d013cc6491407a8e4b7aa21191bc60

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