Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3438d5bb717e1b…

MALICIOUS

PDF

72.6 KB Created: 2020-08-08 03:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 009a42f882030957544e09946b87f30e SHA-1: 700d071e716e5c9350ca31238cd9e2dd56a5a9d4 SHA-256: bb3438d5bb717e1bbda3eb137c714c513e69d6cc184bf4b005037467c907779d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of external links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be the embedded malicious link.

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=cartesian+to+spherical+coordinates+pdf In PDF document text
    • http://pipoda.ncwiba.org.uk/uploads/1/3/2/6/132681670/9565335.pdfIn PDF document text
    • http://files.whiteshellcommunityclub.ca/uploads/1/3/2/7/132710748/roxamepitudenaniwuno.pdfIn PDF document text
    • http://files.mpvtbk.com/uploads/1/3/1/6/131607063/4348b025c10e.pdfIn PDF document text
    • http://jajix.zalc.org/uploads/1/3/2/7/132741334/merevi.pdfIn PDF document text
    • http://files.blairmielnikdesign.com/uploads/1/3/0/7/130776200/cbe841bd9.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/1/0431/1423/4017/files/52613098747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/85574958445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wakudegebemufajetexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/35612207522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/94926520149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4522/2550/files/aperturas_modernas_de_ajedrez_nick_de_firmian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/dobimobopatazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/rsa_algorithm_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/fenabup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/andrographis_paniculata_chemical_constituents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/10027114949.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: mpvtbk.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A8 5148 bytes
SHA-256: 7ba7d07a1a692a6fce8a091684e51f936d03a7c9cf7ea01e1f140ad9d638f6fb
font_01_sfnt_off0000cb20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB20 16604 bytes
SHA-256: 7621d0dd74407fe6839b8220fa6c24139b760013efd830bc7634b351159cad97
font_02_sfnt_off0000ff14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF14 16356 bytes
SHA-256: f7e8a3faf23f9f298c1f1e9a522c602c6c035f86cad05057c268c1d59adb4182