Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ade42721db2f6b…

MALICIOUS

PDF

33.0 KB Created: 2020-08-10 03:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abe81d9d581f6050785a4f0f7c23cc64 SHA-1: 8eb3cffc497049add364c3bb89a7038946b2a629 SHA-256: 75ade42721db2f6b453cb4606eab30b23dcdfae51b7338470f71c681ae6e2e97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though partially obfuscated, suggests a lure related to a 'Neolithic revolution quiz pdf'. The presence of multiple PDF links within the document indicates an attempt to create a link farm, likely for SEO manipulation or to distribute further malicious content. The primary redirector URL is a key indicator of the malicious intent.

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.cc/pify?keyword=neolithic+revolution+quiz+pdf In PDF document text
    • http://files.imagesbya2zphotography.com/uploads/1/3/1/4/131438329/sorulorenupixa_guriwap.pdfIn PDF document text
    • http://files.sararosinsky.com/uploads/1/3/0/7/130740051/4857763.pdfIn PDF document text
    • http://files.theenergyalignmentcoach.com/uploads/1/3/0/7/130775505/vukipebube-jajipo-nazatiritim-sesopek.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/1/0435/0243/6512/files/jamopivipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/revista_eudora_ciclo_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0108/files/sigewegiraxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/maths_book_class_10_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/49282840980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/zubibozobazukome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/rubogigekutofovuxiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/romuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/xubadabakoreziwugavuten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/80836251136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/91424620594.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_off000044ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44BA 5060 bytes
SHA-256: c0a60d141a07df019be3a012b14e69337e6507556741b08ae01bcb18d24835ff
font_01_sfnt_off00005600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5600 9644 bytes
SHA-256: eb8d7ca1e537103dda2bf2d1244c3378114392c7ad3fa5f4256e12b56dced20f

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