Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2136e7cbef9f23…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 04:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67a7c4e5c5a42ea74eefa6a680874355 SHA-1: 677528f975994bb4f928e345c3dc957d4d3c5903 SHA-256: 7f2136e7cbef9f239d1f3e0785a0fd1a87d4c5b99a0646a23d471bd61bdedfb3
202 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector known for malicious activity, specifically disguised as a payment receipt template. The document body and heuristics indicate a lure to trick users into clicking these links, which likely lead to further malicious content or phishing pages. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=letter+receipt+of+payment+template In PDF document text
    • http://files.sydneysoapmaking.com/uploads/1/3/1/4/131438567/2524152.pdfIn PDF document text
    • http://files.portalresearch.org/uploads/1/3/1/3/131380600/zozimosutevazux_sipusupofegez_vugenusilofakov.pdfIn PDF document text
    • http://sojinu.thegreatpumpkinproject.com/uploads/1/3/1/4/131437792/e17b53d2.pdfIn PDF document text
    • http://vuwomozu.artculturevs.org/uploads/1/3/1/3/131379394/debazemololumobug.pdfIn PDF document text
    • http://files.benwahrlebaseballparks.com/uploads/1/3/0/7/130740571/lomeguvuju_damagafobi.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/1/0434/1917/3029/files/19057496632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/gipolixelizenetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/41716008663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2594/7029/files/82888510964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/retuwitewesofamuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/ronukak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/rearrange_sentences_for_class_3_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/29924771232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/73365207449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/bakery_business_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/38386190263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4576/4510/files/54014561734.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 8

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_off00006250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6250 5028 bytes
SHA-256: e9940f66cd5109f851dcbf577bcec08467d22381b52ae4b876179cd982da148d
font_01_sfnt_off00007361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 10364 bytes
SHA-256: c5b992bf30deb28e67e7c22f305f3fd4c92370688146d17f630c3a9b67b50c3c

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