Malicious PDF — malware analysis report

Static analysis result for SHA-256 70944a570202fc84…

MALICIOUS

PDF

34.3 KB Created: 2020-08-24 02:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3d0a08b008be61145f06abfdaafdab7 SHA-1: 6b5704bd5881f4f8f4421ed86999979debbe5a7b SHA-256: 70944a570202fc84838385940a11762fb56701c3ba26e0bf9fc99c1c065a8360
214 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains the primary redirect URL. This suggests a phishing or scam attempt, likely using the 'sheet music' lure to entice clicks. No scripts were extracted, but the presence of multiple links and the ML classifier's high confidence indicate 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.
  • 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.ru/pify?keyword=hoedown+from+rodeo+piano+sheet+music In PDF document text
    • http://files.youtharcheryacademy.net/uploads/1/3/0/8/130874631/8190777.pdfIn PDF document text
    • http://files.thescea.org/uploads/1/3/2/6/132681891/bizedogubikaxa.pdfIn PDF document text
    • http://luzar.gianatiempogallery.com/uploads/1/3/2/8/132814930/bazulo.pdfIn PDF document text
    • http://files.saltedsanctuarysoap.com/uploads/1/3/1/8/131872269/jatanikos.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/1/0427/9821/9420/files/makewolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/51624252047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/77104033626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/12083557212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/bowflex_xtreme_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/49821014328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4842/7671/files/dobinugeboxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/congestive_heart_failure_treatment_nice_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/82752364402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/anaphylaxis_pathophysiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/5097/4614/files/breathing_underwater_alex_flinn_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/notalate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/52148916362.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_off00004830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4830 5416 bytes
SHA-256: 68017c8d1a225bdc5777293533cf0da32cf9dd9319e9c74018fea313539ff9e5
font_01_sfnt_off00005a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7A 9848 bytes
SHA-256: 091048907f137ce01903d5a6afddaf1c9ef3dee10f227b93d0e025e209f2ea36