Malicious PDF — malware analysis report

Static analysis result for SHA-256 992f773cad246e62…

MALICIOUS

PDF

46.8 KB Created: 2020-08-21 17:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 920f1363ff04fd2d25ff43f8af99b83f SHA-1: e61e3e269d9f33f936f1bf5be24963f987ec2453 SHA-256: 992f773cad246e623fbc921056f8b9063da99d00751ef17e7bc7abafd244d260
162 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body contains the text 'Chita chola audio' and the malicious URL, suggesting a lure to potentially malicious content. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious site.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=chita+chola++audio In PDF document text
    • http://files.309brightfuture.org/uploads/1/3/2/6/132683259/vikebefizasu-kineku-kamejozalure.pdfIn PDF document text
    • http://files.marjorieorourke.com/uploads/1/3/0/7/130776123/1147fb4250aa.pdfIn PDF document text
    • http://files.kv-cleaningservices-uk.org/uploads/1/3/2/6/132682640/vupisop_vukorumamuge.pdfIn PDF document text
    • http://sebawus.agkzn.com/uploads/1/3/0/7/130776089/kunasi.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/1/0438/0157/5586/files/career_values_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/gomibunejikuzivak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/36419003735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7383/files/caselet_di_for_ibps_po.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/30211493082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/sobagozibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/gakumaxenidibezawixin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/juvepoxelabefovemugijisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/jodevovuwat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/37346532857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/3._5_complete_arcane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/pibowigeminimomanejif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/entrepreneurship_development.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 5

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_off000070fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 4660 bytes
SHA-256: e3ababd7a2eef799ec08c370e1d4e2a557ccdb829ea2ccd8db935f3e000ce219
font_01_sfnt_off000080c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C0 14448 bytes
SHA-256: fb4461ce4df8d0e4461c2f5637db6f367512901a73bb53a2b2f279683753bc21

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