Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b95e97e5fdcbf04…

MALICIOUS

PDF

46.0 KB Created: 2020-08-06 14:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 652f8639e2ddf0ee891e37cc707171cd SHA-1: 18bbe80342abd307f6aaf70c98275f6e4ea454d3 SHA-256: 5b95e97e5fdcbf04e9d02349c0cde8236bcd636fb9c3a1c903f6ed785850a8f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, which is a common tactic for phishing and malware distribution. The primary redirector URL, https://ttraff.ru/pify?keyword=bovine+serum+albumin+merupakan+pdf, is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of external PDF links suggests a link farm designed to attract traffic.

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=bovine+serum+albumin+merupakan+pdf In PDF document text
    • http://files.whitegallowaysofwayby.com/uploads/1/3/0/8/130873907/fewubogukobavel-sixomolimu-mifip.pdfIn PDF document text
    • http://files.phsboosters.org/uploads/1/3/1/4/131437725/masulagem_bumumazulitowe_jaxabuso.pdfIn PDF document text
    • http://files.tanninglotionsdirect.com/uploads/1/3/2/3/132303205/tivuto.pdfIn PDF document text
    • http://files.yauponberrypress.com/uploads/1/3/1/3/131380107/9075793.pdfIn PDF document text
    • http://zojawe.victoriacookson.com/uploads/1/3/0/7/130775734/4016052.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/1/0433/5557/0341/files/98983782862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/gimabilet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/download_views_from_the_6_drake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0344/4380/files/runir_deux_en_ligne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2064/6562/files/9259522351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9408/7582/files/68326638853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/16913765191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/kiefer_sutherland_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/ziwimudomosofin.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 8

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_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 5500 bytes
SHA-256: 447013c7c713f8d4f3110bd2960c6767d37734c944ef0b3a0d7d5c361c820c50
font_01_sfnt_off00007a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A62 15460 bytes
SHA-256: 8e35ccbdf8fc1cf74e24d5dfaf96ce5901f6c524c1d7acb9e78e9b0e86ecfa00

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