Malicious PDF — malware analysis report

Static analysis result for SHA-256 798b1cc8a0e94e14…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 17:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9427dd8b12ac4277b5d6c8183d2c709d SHA-1: aac738adff853c37aadbcbf45ac9c61de2d2f318 SHA-256: 798b1cc8a0e94e14282332a514110c7e5fa16ccce9555400c9d4c6e59a721e1f
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common tactic for phishing or malware distribution. The document body text, though partially corrupted, suggests a lure related to an 'android barcode scanning app'. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm designed to obscure the ultimate destination. The ML classifier strongly flagged this PDF as malicious.

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=barcode+scanning+app+for+android In PDF document text
    • http://files.beechinorchiropractic.com/uploads/1/3/1/4/131437380/dipof_romupanopomara_fewerufisil.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/1/0433/8771/5742/files/south_dakota_driver_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/quran_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/minecraft_mob_spawning_distance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/gopemokesanim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/29159787971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38967404473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/bss84p_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/auto_formation_windev_23.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/32344517050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/zapobono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/81923487210.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 1

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_off00006efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 5340 bytes
SHA-256: ef9a26ea794c826ee219596a752bfcac25f7891f37395ff1a0914c1fdb63f9a8
font_01_sfnt_off00008131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 10352 bytes
SHA-256: 5639b9f55bbde77b1efa84f8cf51f5a512bfff10a6831befb74b60dc3bb284b4

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