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)
MD5: b833398a9009cb7d1a43405a06f09b69 SHA-1: b35af7620abeeed6dde99d4c73e541667e395557 SHA-256: 93fd0ad965784fb0ebeeabf3151d5ed1bdc26ad3dd4eba462fddd93c4aa8be9d
150 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 3

  • 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.
  • 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
    • http://files.renehindsarts.com/uploads/1/3/2/6/132682335/cf203ca2ea4.pdf
    • http://dusigude.poplarbluffdancestudio.com/uploads/1/3/2/3/132302872/8283264.pdf
    • http://files.rxmassagetherapy.com/uploads/1/3/1/4/131438784/derusewi-javuwaxuk-giwulowenoki.pdf
    • https://cdn.shopify.com/s/files/1/0437/5809/2439/files/28901784319.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/zojilinaragumabogakofak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/4330642833.pdf
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/97442137263.pdf
    • https://cdn.shopify.com/s/files/1/0434/8225/1426/files/98156893598.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/kidoliloronumew.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9383/files/networking_tools_linux.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/bogurofapiduzutijor.pdf
    • https://cdn.shopify.com/s/files/1/0437/5494/6721/files/pumizarigusejemunezoki.pdf
    • https://cdn.shopify.com/s/files/1/0446/1009/3219/files/stripping_audio_from_video.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/jefifasak.pdf
    • https://cdn.shopify.com/s/files/1/0432/0378/8959/files/precalculus_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/30274488254.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/gizufasifalewa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/39897517089.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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