Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c2d881fe96902b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 11:38:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df734115145dc0d7f5892f02c7e61641 SHA-1: 6f2140b67525675fac4d573656912d45485b6190 SHA-256: 23c2d881fe96902b1c93a5f4a5e46b285d24b6b3aa60aef5db8a24bda49688c4
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious redirector URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site. The primary attack pattern involves redirecting users to malicious infrastructure via these 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.com/pify?keyword=total+gym+pro In PDF document text
    • http://files.grpwoodworks.com/uploads/1/3/0/7/130738792/fulegej.pdfIn PDF document text
    • http://files.velez-lab.com/uploads/1/3/1/6/131606056/581866.pdfIn PDF document text
    • http://files.motionxdance.org/uploads/1/3/0/7/130776123/nuvezu-gapezokikusi.pdfIn PDF document text
    • http://files.siberianpurrbabies.com/uploads/1/3/0/7/130740563/dizuw-zumosiri-sunaxepenoj.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/1/0430/6888/3098/files/dirazut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/63542494876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/xesepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/83450716643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/19399123778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/reverse_linked_list_recursive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/15925120067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/filaxalez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2499/6758/files/juvazidokarojerevel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/xidorafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/lajebivekonipeneteredisu.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 3

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_off000068f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F0 5012 bytes
SHA-256: dce073bd333668646ead3ab37615955f2debb3da3af57b7a1c1affb12c2a7027
font_01_sfnt_off000079f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F3 10024 bytes
SHA-256: 2a3cd1a53bbb662800d011ee7c14408d79ef1d09c4a2777e2bae3d2cd9c1ec0c

Open this report in the interactive analyzer, or submit your own file for analysis.