Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cfe7dac2d57ca49…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 08:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d6d241ca3d1230bbf4ddfab764c32d9 SHA-1: d862ef608656a83c7f50ea6f78bd6ea699093178 SHA-256: 1cfe7dac2d57ca497b7b7dd48b06f68f91014066e0fe72ec9817e98380fce44f
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, forming a link farm, with one of these links directing to a known malicious redirector. The document body is heavily obfuscated and contains what appears to be junk data along with a URL. No scripts were extracted from this sample. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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=fly+fishing+guides+in+broken+bow+oklahoma In PDF document text
    • http://files.nixageneralbaptist.com/uploads/1/3/0/9/130969461/abda9fa24b.pdfIn PDF document text
    • http://buxaver.meganrielmehan.com/uploads/1/3/1/4/131454165/722619.pdfIn PDF document text
    • http://tiwixal.shine-bright-centre.co.nz/uploads/1/3/1/4/131406893/setusuv_jajid_buduna.pdfIn PDF document text
    • http://files.ajsherwood.com/uploads/1/3/2/7/132741029/8587149.pdfIn PDF document text
    • http://felifurez.bling45.shop/uploads/1/3/2/7/132740720/fibafiz_nifinidopo_xorilabi_ropubusalikosuj.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/1/0435/5116/2517/files/90849093237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/fiwokegedaribelivamobavon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/hunter_x_core_sprinkler_system_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/ragowuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/mental_capacity_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/10th_english_synonyms_and_antonyms_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/gerisaliparidijopez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5055/5799/files/usa_charachter_arcade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3282/files/french_to_english_translator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/xokawadokoruw.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_off00005a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A65 5672 bytes
SHA-256: 9eadc9788dceff14f6dc88dc8ad1b6e6d5e831b2eda22670f132b4ba56a6c4c2
font_01_sfnt_off00006d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 10504 bytes
SHA-256: 195060ae2225a27fa03dff7ea0861a0549aa3e8e4fb838c08219cfb73be8006b

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