Malicious PDF — malware analysis report

Static analysis result for SHA-256 8111781db80af58f…

MALICIOUS

PDF

41.5 KB Created: 2020-08-09 19:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8ce5d7b3d7f6fce1834820caf3a43ed SHA-1: 3d0ed4ebde1495123c8ceb09e71111b4dd367738 SHA-256: 8111781db80af58f8fa8bd29efcdff306f2344bf92f9b5159ea054709b2bff80
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) and then to other PDFs, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains a URL that matches the redirector, indicating an attempt to trick users into downloading malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=connected+autonomous+vehicles+pdf In PDF document text
    • http://jutibax.charlesmccarthydigitalphotography.com/uploads/1/3/0/7/130775904/mojom.pdfIn PDF document text
    • http://files.rebuildinglauren.com/uploads/1/3/1/4/131454503/bojijudadapi.pdfIn PDF document text
    • http://files.rvrescueart.com/uploads/1/3/2/7/132741385/628423.pdfIn PDF document text
    • http://files.leecummins.net/uploads/1/3/1/4/131437037/168789.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/1/0432/9809/5272/files/loluvumevukaxemedati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/zogesegirexibonazewipama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/netubujulemanigegapivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/bapididiferifevojisip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/65684538561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/moneverozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/tijofawirobobuwulemugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/lapititavitotejakitaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/nerodupijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/dilubevabivopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/93058216862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/jewukiwajajoxozosiresat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5069/5830/files/jojabipebibilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/fenaxabibetusufopeset.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
🗂 Part of campaign: paulreecephotography.com 4 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6429 5264 bytes
SHA-256: 81f6d1073b11f11894c046cf90c9b6ce6295dd2a79c2a3f6822b95e40b0e542f
font_01_sfnt_off000075f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F6 10244 bytes
SHA-256: d132d05a028945dde97c47717661a8fb4807e356e506ab2fdfb6e6eb5145c287