Malicious PDF — malware analysis report

Static analysis result for SHA-256 b81e484529ae2760…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 12:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fea1cc993a3b27ae25cf725a6d9e709f SHA-1: fa594fb290a8f89cbfaf53bd66678129f3ff8b2b SHA-256: b81e484529ae2760d6fedc7a823001fb1380956b97c52fd3ac3454b20c22c0cb
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as a lure for free ringtones, which points to the ttraff.com domain. It also exhibits characteristics of a link farm, embedding numerous links to other PDFs, potentially for SEO poisoning or to host further malicious content. The presence of a password archive lure and a callback phishing lure suggests a multi-stage attack designed to deceive the user into downloading further payloads or engaging with a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=ringtones+for+iphone+6+plus+free In PDF document text
    • http://nekixax.keepinghopealivemissions.com/uploads/1/3/1/3/131379732/9314241.pdfIn PDF document text
    • http://files.ucitownandgown.com/uploads/1/3/0/8/130813400/zadazasako_wesesop.pdfIn PDF document text
    • http://jugutak.noidurham.org/uploads/1/3/1/4/131437145/kivulif-lojole-bunowerotopo-kadusadosimobiv.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/1/0430/5112/2842/files/5298808346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/32570795987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2438/files/debit_memo_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1898/3323/files/16945362872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/wirisokinud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/all_i_do_is_win_clean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9513/files/87156860338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/pizuxefum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/70377868985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/13594558523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/46625865764.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6950 5116 bytes
SHA-256: d8c4cff2b8e0540eb9406925f575fac479afcdecc4f68c683c17e64a3d914d2e
font_01_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10272 bytes
SHA-256: 8d87a4bbe9d8032444654a2958df80d345d4e0d9e44bb17b1cef076302430cf2