Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7c8b12415e0f71…

MALICIOUS

PDF

61.6 KB Created: 2020-08-19 20:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18c7149af3f25eb1ccb1a656c7525a69 SHA-1: f9929afaa0a0865330192e1b345cc49da8ec14f2 SHA-256: 5f7c8b12415e0f7193bf347f0bb949b75530dff8928daf32d465c3ef8876e054
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector URL (https://ttraff.ru/pify?keyword=appserv++windows+xp). This suggests the document is designed to redirect users to potentially harmful sites. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the embedded links and the PDF structure points towards a phishing or redirection attack.

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.ru/pify?keyword=appserv++windows+xp In PDF document text
    • http://files.thetruenerdcompany.com/uploads/1/3/2/6/132681033/bowis.pdfIn PDF document text
    • http://zawifup.jeriowa.com/uploads/1/3/1/4/131406893/2d8ba018.pdfIn PDF document text
    • http://files.perryperkcoffee.com/uploads/1/3/0/9/130969308/medodoxi.pdfIn PDF document text
    • http://files.somesugarwithspice.com/uploads/1/3/1/4/131453990/jidegotaxubegot.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/1/0428/1987/9068/files/medaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/wusokopajizebenegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3448/2587/files/phytophthora_parasitica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/79219513008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/lavaxixelovemowokewovituf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/32686550022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/givaritapegogenojaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/27540211285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/19578859392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/belefipowogixomonaluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/gazodomareralemudoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/jusilemerunixefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/polygons_angles_and_parallel_lines_worksheet.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_off0000aa29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA29 4920 bytes
SHA-256: 0f4041d90530c474d4f2af75cf648d639a7aa9c8c84135cc15a4b24fba5dec6c
font_01_sfnt_off0000bb0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB0D 15000 bytes
SHA-256: d25134bbbbf196f01958ed5d8ba5a91df6e4af5e3374b2a82ef23485e5ca03c5

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