Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7b1e046e8d92bf…

MALICIOUS

PDF

47.4 KB Created: 2020-08-21 08:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0478e626324b2ef48e1b5f9034bca85 SHA-1: bd2a1e681a3d885c2b561a8e4f937ff07f169cdb SHA-256: 1f7b1e046e8d92bf906f99c529b293b4e4ebd67be16a3423ab59d7facc20bcf8
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one that redirects to known malicious infrastructure. The document body text and heuristics indicate a lure related to 'best mobile anti malware for android', suggesting a phishing or scam attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=best+mobile+anti+malware+for+android, which is used in conjunction with a link farm strategy.

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.ru/pify?keyword=best+mobile+anti+malware+for+android In PDF document text
    • http://files.wcbk.com/uploads/1/3/0/7/130776726/4433218.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/1/0427/3097/9495/files/10045903072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/7908658145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/jomositudab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/kawevulumegodajurudizob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/vesagilugifumubixuzejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/28671672040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/bichoo_full_movie_480p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/accounting_concepts_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/zafixunuko.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 4

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_off00007b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B48 5332 bytes
SHA-256: e1daaa75e1618beb11efc130042255583ba300070073443137f55e41590392e4
font_01_sfnt_off00008d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D59 10420 bytes
SHA-256: af4982e87478a883df85ddb06c3afad78c72df40b59505c5f67b3d1aea8eee82

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