Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba3249787d7f4fc…

MALICIOUS

PDF

50.4 KB Created: 2020-08-01 05:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d9e22d76c41b706260e3781161c0481 SHA-1: e92b9ca19aba91bb8aff9ae0c252c0b2a03f99d9 SHA-256: 4ba3249787d7f4fc95ee9a2b9d9729d9cad1b0e24fef2a37ea1058bb57117d74
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Bloodborne undead giant' and the malicious URL, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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=bloodborne+undead+giant In PDF document text
    • http://files.northwalestreeservices.com/uploads/1/3/0/9/130969312/6481884.pdfIn PDF document text
    • http://files.laurakretz.com/uploads/1/3/1/8/131857364/c1f6b85ad.pdfIn PDF document text
    • http://files.roxstardance.com/uploads/1/3/1/4/131412426/a78532c782085.pdfIn PDF document text
    • http://files.newtonchineseschool-1.org/uploads/1/3/1/4/131437689/4217347.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/18246013765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/nepotero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0510/files/xebewegudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/47161758067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/71356301441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/wiliragaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/59131620602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/32985901340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/29610043675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8099/8302/files/bagiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/tuxojotepebawipupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/tufilamug.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: skydivevoss.no 5 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 3412 bytes
SHA-256: 31a9d7946fb804da4cedae213bf010346a14d45cef2033f83c8926ab103da620
font_01_sfnt_off0000771e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771E 4884 bytes
SHA-256: e34d697b0f05e88a1fd950f0fc7c01fc1129304967c1f8e1accac33695b2414c
font_02_sfnt_off000087c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C1 11928 bytes
SHA-256: b3b360edb167fe7dc4cf231b843673d7ebf78955e63d1b3155a61cebf10fd0f3
font_03_sfnt_off0000ae4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34