Malicious PDF — malware analysis report

Static analysis result for SHA-256 813b6f6faf22441a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-07 07:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3067caffc5eeafcdf7818590745b2984 SHA-1: 7d5189a85c4807b46d59d2ff0aee6dd011f7e46f SHA-256: 813b6f6faf22441a522bceffe78323e771c513b1caa166fecdaaaed6c80cb1e8
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a calendar download. This redirector is part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains the same lure text and URLs, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.

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=tamil+christian+calendar+2020+pdf In PDF document text
    • http://files.olgarocklin.com/uploads/1/3/0/8/130873965/ripupinexowi.pdfIn PDF document text
    • http://sitofijex.bignightconsulting.com/uploads/1/3/0/7/130738970/800cbb2e25d6121.pdfIn PDF document text
    • http://files.priscilladisla.com/uploads/1/3/0/7/130775137/6272198.pdfIn PDF document text
    • http://files.servicethatsreliable.com/uploads/1/3/1/6/131637953/samexi.pdfIn PDF document text
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.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/1/0431/2432/6564/files/58633215843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/22362867815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8747/6389/files/miberupoxutoruzaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/vobenika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/29041952791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/koseluxaxama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1959/0056/files/24097586392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8646/2628/files/tikisuxaxojimip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/noravukanofe.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 8

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_off00005fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDB 5620 bytes
SHA-256: c5f0cba1160cd900ebf657494cf34bddf103c291f3627acd202c1feed95413ba
font_01_sfnt_off000072c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 9864 bytes
SHA-256: d613aae11d0ec1cf84f11aa9840c92d8970816e7c36dc066ebe001010caa51e1

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