Malicious PDF — malware analysis report

Static analysis result for SHA-256 977085942764d4af…

MALICIOUS

PDF

38.6 KB Created: 2020-08-03 21:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e2ae9003915c1e5927ba562dbf06d1e SHA-1: af6bbe229078673eff3bc1aa9bf1a5e4aa13dcdb SHA-256: 977085942764d4af7a2b55193e54efe506c5efb003e4c19ad0e1568e604defec
234 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a series of benign-looking PDF links hosted on Shopify, likely as a distraction or to appear legitimate. The primary malicious intent appears to be redirecting the user to the 'ttraff.cc' URL, which is known to host malicious content.

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=present+continuous+tense+worksheets+with+answers+pdf In PDF document text
    • http://files.lukasstanley.com/uploads/1/3/1/4/131438180/5bb0b24.pdfIn PDF document text
    • http://files.wintercreekwildlifeartunlimited.com/uploads/1/3/2/6/132683137/tevaxewivosim-varom-gomitubupil.pdfIn PDF document text
    • http://files.mobadanceacademyus.com/uploads/1/3/0/7/130739202/4403828.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/1/0432/4248/7972/files/xofatopuvibinenidap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/4122610163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/10262691234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/xapop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/95637820123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/80556375312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/the_strain_trilogy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/24897387674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/kibemedekiganorefozojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2439/7989/files/7334839442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/nimavidumam.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_off000057d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D1 5368 bytes
SHA-256: cc2dd72ee742cc17948b41d8e7d97168a08a9c7bcbc9417192485275e60b87c6
font_01_sfnt_off00006a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A24 10336 bytes
SHA-256: a7d6d42c75b0f34c0a0bf751825512f7c21c68cf6ebbe8f13f0e173db7712407