Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44b96fa7c885931…

MALICIOUS

PDF

46.5 KB Created: 2020-08-19 00:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 110b9bc3cb6230e2980c1e5a6bab6d12 SHA-1: c26a0b31af2a58d656cf6fd4e46c37a51cc3ca9f SHA-256: f44b96fa7c885931fc867756b35d5369f411b2af35cb95da50f3c183a3d12313
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be related to a driving license renewal, suggesting a social engineering lure. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which is likely used to funnel victims to further 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=revalidacion+de+brevete+a2b+2018+pdf In PDF document text
    • http://files.authoravadanielle.com/uploads/1/3/1/4/131437385/5071130.pdfIn PDF document text
    • http://deves.promisewed.com/uploads/1/3/2/6/132680813/ff2f7356f6866.pdfIn PDF document text
    • http://files.inneractiondance.com/uploads/1/3/1/6/131636625/ravat.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/1/0429/1434/9215/files/houston_time_zone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/hodder_education_maths_workbook_3_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/mystic_messenger_chatroom_guide_day_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6055/7974/files/benim_hocam_yks_tarih.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/27338433333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/25817698781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/kujisezup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1157/1865/files/west_s_business_law_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2956/1495/files/les_maladies_cardiovasculaires_dfinition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/jatesupomuvegevomaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/spider_man_into_the_spider_verse_coloring_pages.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 7

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_off00007559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 5696 bytes
SHA-256: eac5b865c431baf6c832fa4488fac7b417eed94fc2f8e0760e51b55eae4d5769
font_01_sfnt_off000088cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CD 10844 bytes
SHA-256: c0c599ecc0f1e6ef6f6f0ea7633bfa0954a19d1770af3de4a51aff6610eba5fd

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