Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a5e348c722432c…

MALICIOUS

PDF

43.9 KB Created: 2020-08-14 00:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b12156725f5412e771f6ee5ea770506 SHA-1: 4c24a927606079b6b4c7a7a5bcc6da56aebe3cd4 SHA-256: 68a5e348c722432cf2c0ec1fbca5bba60d34fc0b5b0485140d72e1db92de840d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a PDF redirector link. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics and IOCs. This suggests the primary goal is to redirect users to malicious content.

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=resume+letter+format+for+teacher In PDF document text
    • http://begika.validage.net/uploads/1/3/1/0/131070420/dotojonirawozis_bivobodalafil_xazotim_nasevepafogo.pdfIn PDF document text
    • http://files.vbashelbyville.com/uploads/1/3/0/7/130776276/nesifepoz.pdfIn PDF document text
    • http://files.livingvoice.ca/uploads/1/3/0/9/130968984/varagolo_taditafujaleva.pdfIn PDF document text
    • http://vugab.abruckx.com/uploads/1/3/2/3/132303189/terumid.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/1/0433/4046/4281/files/amphotericin_b_package_insert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/15880856112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/gupanaxikiliwodonuvagew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/38156364561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/10542793227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/centos_build_essential.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/31781244592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/xoxotadosixevizifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4249/5895/files/72553961289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/53075375176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/47971801261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2710/2887/files/affidavit_of_loss_atm_card.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 3

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_off00006e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2D 5128 bytes
SHA-256: 5d125adec263bb4b26c41854b831cb362eb89b7166f2fe22b646f8abac69b62c
font_01_sfnt_off00007f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F76 10408 bytes
SHA-256: 3b0fa8102a6bbae6c81a1b133a7d10c38fa5feed0ac50d81cca0fbad2a910957

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