Malicious PDF — malware analysis report

Static analysis result for SHA-256 3418d0255bde6c22…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 01:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47bfcfa35fe5cdb206f7d3f4c4ec6597 SHA-1: 292cbbe3c815f5b4d3541fcb41a4c4376cd6d798 SHA-256: 3418d0255bde6c226e8f7cb5d5f18aec4b7e88b7df51cf2c4d6ff5f00d3bb059
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector pointing to a lure for 'Autodesk sketchbook apk hack version', indicating a phishing or scam attempt. The heuristic firings confirm the presence of malicious redirector links and a link farm, suggesting an attempt to drive traffic to potentially harmful content. No scripts were extracted from this sample, but the embedded URLs and link structure strongly suggest a social engineering attack.

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=autodesk+sketchbook+apk+hack+version In PDF document text
    • http://jakamuxi.sweethartbaking.com/uploads/1/3/1/6/131606620/deravixaxewubofin.pdfIn PDF document text
    • http://files.qualitypreparedmeals.ca/uploads/1/3/1/8/131871740/423839.pdfIn PDF document text
    • http://files.forsythcountywomensclub.net/uploads/1/3/1/3/131379544/7371891.pdfIn PDF document text
    • http://files.nanonore.com/uploads/1/3/1/3/131380005/04a3c3f5a65a6e6.pdfIn PDF document text
    • http://files.healthsidekick.org/uploads/1/3/1/3/131383678/6225911.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/1/0428/8203/9964/files/learning_german_language_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/77323086036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/sikegawojulebumabasejifad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/pefodix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/decision_matrix_excel_template_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8761/7447/files/38635505915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/selevamoxolenaleribeniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9175/4149/files/letter_writing_worksheets_for_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/99409197848.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 7

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_off00006719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6719 5384 bytes
SHA-256: 8133a3e91694699ebb591078219ec11231dec6bfae798bbf567ffd29c82f1e4b
font_01_sfnt_off0000795c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795C 10912 bytes
SHA-256: 0c7ffacc609f9b9d2038acd07a08f90b77ca685d7ca479ac8acc6516663b3e0f

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