Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b2f210362c010d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 02:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fc5d0a32f200277f45d223190c658a8 SHA-1: 3e5355123843c2a6af3f9d8776cb69e662a61bac SHA-256: e8b2f210362c010d83bd8f4afdbace918c109dc9846c34defae5e3d07017573f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF as malicious. The document body appears to be obfuscated or corrupted, but the presence of many external links suggests a link farm or SEO manipulation tactic, potentially leading to further malicious content or phishing attempts.

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=brahmananda+swarupa+song+free In PDF document text
    • http://files.thecbhsa.org/uploads/1/3/1/4/131437657/5a68427e8b2937.pdfIn PDF document text
    • http://files.maggiekingfreelance.com/uploads/1/3/1/3/131398392/8158535.pdfIn PDF document text
    • http://zikej.atxlifehealth.com/uploads/1/3/1/4/131453247/2b99ba1.pdfIn PDF document text
    • http://files.stitchmastersltd.com/uploads/1/3/1/4/131453350/d5c5786245342ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/xibiruvufatudip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0873/5907/files/pradhan_mantri_awas_yojana_application_form_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5180/0981/files/against_medical_advice_form_vet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/redubuwosewazuputij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/nelafovajabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6412/9696/files/74391701765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/42550179028.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5474 5564 bytes
SHA-256: bfb250e5a7e42a21db30269c3511dfa7c64e2c4ec322a142123c45b5f1e20c63
font_01_sfnt_off0000674f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674F 14000 bytes
SHA-256: 3c2b9f1387298242d87c245edcb5fe666081d88081ee7f671e86e246fbf53d7d
font_02_sfnt_off00009386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9386 3428 bytes
SHA-256: 9a4a2d5f1b437f6066762a1a253381d3c47b3902f44a1fd8e5809e687ef323f4

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