Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab3890f871cf3a8…

MALICIOUS

PDF

73.9 KB Created: 2020-08-06 12:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2806251046fbc4a1d62e8ca725e5c48 SHA-1: 2ff496a3fc1ce5d87183f2ca8bf0099fba2181a5 SHA-256: 2ab3890f871cf3a895938fe2d361f1bdb0c91a046e26837d44025e9092cba107
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests a phishing or scam attempt where the user is tricked into downloading a seemingly benign PDF that actually leads to malicious infrastructure.

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://ttraff.ru/pify?keyword=cholecalciferol+vitamin+d3+davis+pdf In PDF document text
    • http://files.sunshinebehavior.com/uploads/1/3/1/3/131383802/zavawusubemelo_vajunemesezosa_lalenoxagitaxe_siserejofefinib.pdfIn PDF document text
    • http://files.wgjewellery.com/uploads/1/3/1/4/131408100/7390244.pdfIn PDF document text
    • http://files.queensofourbeautifulplanet.com/uploads/1/3/1/3/131397971/8463441.pdfIn PDF document text
    • http://vumuzupij.michaeltmeier.com/uploads/1/3/0/7/130775612/zifezakej.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/1/0436/1905/7826/files/learning_french_books_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2761/files/92369369421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/mukesapese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/mulimiwawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0476/files/diwiretilepeluwifujiredid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/94178215600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3989/9304/files/loxenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/kudujiluvefexejifuxorala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/wematebafadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/17841728949.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
🗂 Part of campaign: horshamtreesurgeons.co.uk 3 samples

Related samples 3

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_off0000e474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE474 5524 bytes
SHA-256: 18fa5a0e575db142f920ffee6b5ee5143650c800a50ce8656aa407d51fea8412
font_01_sfnt_off0000f717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF717 10380 bytes
SHA-256: fc42fd87eecb0ada30f129e1d31722aae15b92b510a935a78a6e79c49802528c

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