Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab2f88cd57b77a8…

MALICIOUS

PDF

33.0 KB Created: 2020-08-11 05:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0160b0ef397d1587dcf869871b27a973 SHA-1: 738a2036f120dfbba4b50f4eca8aff19fbb4c960 SHA-256: 7ab2f88cd57b77a8794aae20119611bf931664dd369e70c51e5a947b23205e4b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body text and heuristic firings indicate a lure for free PDF downloads, likely leading to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.

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=a+dozen+a+day+pdf+free In PDF document text
    • http://files.amurielyoga.com/uploads/1/3/1/8/131856516/dulefene_mubesebekeka_rajasijan_galewir.pdfIn PDF document text
    • http://files.glenmccuneart.com/uploads/1/3/0/7/130776745/f4752f42add47cb.pdfIn PDF document text
    • http://files.excaliburtravelandtickets.com/uploads/1/3/0/9/130969710/76ef8ed7d6cb3.pdfIn PDF document text
    • http://files.drkamiland.ca/uploads/1/3/1/3/131381112/4919357.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/1/0433/2303/1720/files/boosting_confidence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3798/8766/files/52795635405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/32405239610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9836/5340/files/calendario_con_settimane_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/bosupiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/pofiwewiluvamizumoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/68705485636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/bitadurexozulumuzafuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/15993904938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/47162977872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/508957232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2473/6678/files/ncdpi_licensure_renewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/kipowovujeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/pathfinder_investigator_guide.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 5

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_off0000459f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x459F 4964 bytes
SHA-256: be39f76413e8c672bd2367349717e6c39c4ac7cb91458c86197edc22b80bcd72
font_01_sfnt_off000056a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A7 9516 bytes
SHA-256: 5bb487284ebb1201ae1836a0470cc9369668560804dda30ae52f3e5190a88edd

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