Malicious PDF — malware analysis report

Static analysis result for SHA-256 a352d3649b1cb532…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 21:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f2bed4813976415de5dd4116252b1f6 SHA-1: 66da562f3c9baf5f9852e9fb5543485613bc191b SHA-256: a352d3649b1cb532192562a5b22aaeb3e5f28c0c82f10801cad6184559afaf5b
214 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the critical heuristic. This suggests the primary goal is to redirect the user to malicious content, likely for phishing or a scam. No scripts were extracted from this sample.

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) 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.cc/pify?keyword=accedian+nid+user+manual+pdf In PDF document text
    • http://files.rsccarlington.com/uploads/1/3/2/3/132303230/f29fde42.pdfIn PDF document text
    • http://files.johnbhenry.com/uploads/1/3/1/0/131071167/nudemosis.pdfIn PDF document text
    • http://files.temptdstylez.com/uploads/1/3/1/4/131406108/9340133.pdfIn PDF document text
    • http://wivudevak.jennibrennan.com/uploads/1/3/1/3/131384281/poguxufijapux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/17330849541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/pendekatan_behaviorisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/cartesian_dualism_mind_body.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/77499653247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/cpr_call_blocker_201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/pengukuran_biomassa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/8208550153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/libivose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/adolphe_benjamin_constant_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/rikalobasenabajujixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/enron_corporation_case_study.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000682b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 4984 bytes
SHA-256: 6bfcf9692284def0c91901fba67272677a30aaa26e595166622f51cefbed0801
font_01_sfnt_off000078e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E7 10004 bytes
SHA-256: 1713e2b8f44e81c7fb3aec99abcdec2c4d4e309ce02dd1a2b9667af57a6e6a09
font_02_sfnt_off00009b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B35 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361