Malicious PDF — malware analysis report

Static analysis result for SHA-256 13a93963725b0007…

MALICIOUS

PDF

56.2 KB Created: 2020-08-21 00:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ff7a4e272b3f7957edaef34e8f7c015 SHA-1: 5ef34f991c364676062020948fcc9865bbdb4695 SHA-256: 13a93963725b000780f4fe26db9a818689210ebf6f678ca0db22dc28d91c1f4c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely a lure for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, potentially a second-stage download.

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.cc/pify?keyword=%25CE%25B2-+keto+esters+formation In PDF document text
    • http://files.campmi.org/uploads/1/3/1/4/131405948/junewowufonunuvoger.pdfIn PDF document text
    • http://xotiz.thealmostblog.com/uploads/1/3/1/6/131607163/28199ed.pdfIn PDF document text
    • http://files.alvmf.net/uploads/1/3/1/6/131637953/lelubarezu-boxibutufeke-ronesud-xuxunebewasusi.pdfIn PDF document text
    • http://files.vk3sn.net/uploads/1/3/1/8/131871894/d40f274a4b81b4.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/1/0431/7754/1792/files/ferengi_rules_of_acquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/archery_king_mod_apk_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8609/3214/files/numbers_in_french_language_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/zurufobugaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8596/9048/files/wanalozaropik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3170/2176/files/wellcare_medication_prior_authorization_form_illinois.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/sovikenurem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9079/files/wutipemewuwodiwatuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6390/1334/files/al_koran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/qdoba_mexican_grill_menu.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_off000093cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CC 5024 bytes
SHA-256: c136f2247c0d4084617e684d18bdf3229378e066cf03bf530d559999b82aaaf8
font_01_sfnt_off0000a4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DA 14496 bytes
SHA-256: f3717ce699fe0d08ceb1adf112dbd558cd8ad2e14a8fb954b2cead075f3232fe

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