Malicious PDF — malware analysis report

Static analysis result for SHA-256 570140c6a89e0c71…

MALICIOUS

PDF

55.0 KB Created: 2020-08-12 04:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c4fa2c5de964de7406cf7466594df92 SHA-1: 47b87cf7afbba4645b480d396e5e29ac5fb674f4 SHA-256: 570140c6a89e0c711581027104880108d3c1785b37695c5d9ce7c56ba6dadca6
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to distribute malicious content through numerous indirect links, likely to evade detection and mislead users.

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=advanced+calisthenics+pdf In PDF document text
    • http://files.gentletouchcreationsministries.com/uploads/1/3/1/8/131856433/6d456af871.pdfIn PDF document text
    • http://weras.thesoulcenter.ca/uploads/1/3/1/4/131407558/mulite.pdfIn PDF document text
    • http://tukikub.saveourdowntownslo.com/uploads/1/3/1/3/131383483/1424573.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/1/0433/3492/6495/files/48701464471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7732/0348/files/37770896972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8905/9228/files/sediw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/41784141724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/zopilitigeresusoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4904/9494/files/dedication_sample_for_ojt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/31823817799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/lufasakunejinimikusagun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/zupebawatigumofuxikusevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/speaking_assessment_rubric.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/cetoacidosis_diabetica_manejo_de_urgencias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/zamaruduxoti.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_off00009b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B02 5196 bytes
SHA-256: 6d0d59365e6a9f0f659d6cbba61e487fe233ba94f40408b49829b282b55e4ad6
font_01_sfnt_off0000acb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACB7 10204 bytes
SHA-256: cc5be8a582281c23a27f557cd4c63c875f29e6b34b379168fada1430df992dd9

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