Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fd0ad965784fb0…

MALICIOUS

PDF

51.7 KB Created: 2020-08-03 22:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b833398a9009cb7d1a43405a06f09b69 SHA-1: b35af7620abeeed6dde99d4c73e541667e395557 SHA-256: 93fd0ad965784fb0ebeeabf3151d5ed1bdc26ad3dd4eba462fddd93c4aa8be9d
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm for SEO poisoning or phishing. The primary malicious URL identified is https://ttraff.cc/pify?keyword=all+apologies+chords+pdf, which redirects to further content. The document body contains garbled text but includes the same URL, reinforcing its role as a lure. No scripts were extracted, and the PDF structure itself is the primary vector for malicious activity.

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=all+apologies+chords+pdf In PDF document text
    • http://files.renehindsarts.com/uploads/1/3/2/6/132682335/cf203ca2ea4.pdfIn PDF document text
    • http://dusigude.poplarbluffdancestudio.com/uploads/1/3/2/3/132302872/8283264.pdfIn PDF document text
    • http://files.rxmassagetherapy.com/uploads/1/3/1/4/131438784/derusewi-javuwaxuk-giwulowenoki.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/1/0437/5809/2439/files/28901784319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/zojilinaragumabogakofak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/4330642833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/97442137263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8225/1426/files/98156893598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/kidoliloronumew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9383/files/networking_tools_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/bogurofapiduzutijor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5494/6721/files/pumizarigusejemunezoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1009/3219/files/stripping_audio_from_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/jefifasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8959/files/precalculus_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/30274488254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/gizufasifalewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/39897517089.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFF 5408 bytes
SHA-256: d197da065cd96e1c49700354556a2242946dbf2bdefabddcf2544c993571bfdf
font_01_sfnt_off00009f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5E 10160 bytes
SHA-256: 88aab90174cc0fb87118327e238258dc5cb107e2c603751adc9a7be5b2e83b59