Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5f6f13780b8577…

MALICIOUS

PDF

45.8 KB Created: 2020-08-14 18:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ae314608b8c644b157db7b606b15b4e SHA-1: 35a64597d8d2cfdb6c45ee32bfc3f2e5018c96fd SHA-256: 6a5f6f13780b8577e68bff8805aeae7b6e2347d4d3b505f7928125d937d98695
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and benign-looking PDF filenames, suggesting a link farm designed to trick users into downloading potentially malicious files. 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.com/pify?keyword=jsp+number+format+decimal In PDF document text
    • http://kesamiti.bulbsoup.com/uploads/1/3/0/8/130813054/6539618.pdfIn PDF document text
    • http://files.kobanuniverse.net/uploads/1/3/1/3/131381374/tajorez.pdfIn PDF document text
    • http://files.twincreekgoldens.com/uploads/1/3/1/4/131453559/d47732d32.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/1/0431/0319/1193/files/convert_bin_cue_to_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/99911738003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6523/6886/files/the_norton_anthology_of_short_fiction_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/top_100_worship_songs_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/central_asia_travel_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/zulonolasaguxoxukir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6845/1992/files/x5_bluetooth_car_kit_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/amadeus_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/70558785759.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D63 3548 bytes
SHA-256: 0f39b924d164b50b4a46f241ee119065a42ae602b424870a60b3fe8d646ecb54
font_01_sfnt_off000069fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 5432 bytes
SHA-256: 3b1ed29eef08d6badf5e5ed85a755cdd2dc167a8a541a1ae93be8eb2e636c131
font_02_sfnt_off00007c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C48 14696 bytes
SHA-256: ed9db06ef50afb3fc82f8b810939c9897382886bdbf0f41536800fe37c7cd118

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