Malicious PDF — malware analysis report

Static analysis result for SHA-256 7238db53f5156dfa…

MALICIOUS

PDF

39.6 KB Created: 2020-08-23 01:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4b11b0430290dd99e7ba7f9b9dcf4d3 SHA-1: aa0565fe8ffd3e58e2718a85bc756c84dea0cb6d SHA-256: 7238db53f5156dfaf9c561aa02aec985e16a055c4e3d91a361b5751a8fbdf252
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to 'company account balance sheet format' and embeds multiple links. One of these links, 'https://ttraff.cc/pify?keyword=company+account+balance+sheet+format', is identified as a malicious redirector. The document also features a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicated maliciousness.

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=company+account+balance+sheet+format In PDF document text
    • http://files.nanosystems1.com/uploads/1/3/1/4/131408103/712e1beb833f.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/1/0433/3246/8904/files/chord_sheet_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/vcomp110._dll_sony_vegas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2703/7336/files/sagifijoxukanirip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/90474070306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4877/1477/files/emulateur_android_linux_mint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/sajuwewilezimevijuvefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/puvasiwagogetogofogij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/71846246131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/3326587987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/82680632674.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 2

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_off00005c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0B 5404 bytes
SHA-256: a6647b71330f3299dddaed6d4950cd403275049d38f74a15014a0351bd621121
font_01_sfnt_off00006e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10396 bytes
SHA-256: 5f7da0435e9bfead1d653051f7c636430689f5ed93ef11109966c0971865f86d

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