Malicious PDF — malware analysis report

Static analysis result for SHA-256 501bff9e14ebe8e5…

MALICIOUS

PDF

48.3 KB Created: 2020-08-01 14:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1478d3c3969181942f401fc92028a580 SHA-1: fc59e59bc6576e6af83f58e66f18927f4a051b0c SHA-256: 501bff9e14ebe8e524fcb96d9b4771a676d1a43b5b3959dc6a8ee8f32b1660ff
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests it is a form, and the presence of a phone number lure further supports a callback phishing or tech-support scam pretext. The primary malicious URL identified is ttraff.com, which redirects to a page related to 'va form 28 1900 pdf'. Numerous other PDF links are present, many hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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.com/pify?keyword=va+form+28+1900+pdf In PDF document text
    • http://files.americanlibertyforum.org/uploads/1/3/2/3/132303035/5894735.pdfIn PDF document text
    • http://files.betinagozo.com/uploads/1/3/1/6/131636956/c50fbe338d1.pdfIn PDF document text
    • http://files.antifrailproducts.com/uploads/1/3/2/6/132683330/pumetuz.pdfIn PDF document text
    • http://///www.ftc.govIn 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/1/0431/7777/1164/files/68431706250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/13914348185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/tutikuruxaxepalitobej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/noribi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2080/4518/files/mukarovalazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/jamos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/15897713771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/51702748769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/59274124111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/66137486363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/fupiropamimadewenage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5084/1750/files/21439814332.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA8 5616 bytes
SHA-256: 0c3dd7cc8f81d4beee6a379e16a55f2c64c0020dff4ce78451a0e265b54a3e3b
font_01_sfnt_off00008fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB3 10824 bytes
SHA-256: 8204a74f720baccc6e1865058f5a13559ea180d99e103a58c7c2f6a341c3e327

Open this report in the interactive analyzer, or submit your own file for analysis.