Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4bb78bb0be2594…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 01:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b926db7b24a1861d6b83cf1f216306f SHA-1: 7132a21f6d19945f3fb1c43a33af152f209e7133 SHA-256: 2b4bb78bb0be259463e18d651a91fcbe58e0940c1b261d5ccc90cbbe252beec0
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a critical redirector link to 'ttraff.cc'. The document body text, though heavily obfuscated, contains the same lure text as the redirector URL, suggesting an attempt to trick users into clicking the link. The primary purpose appears to be directing users to malicious infrastructure via a deceptive lure.

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=t20+cricket+score+sheet+free In PDF document text
    • http://files.thestonestash.com/uploads/1/3/0/9/130969485/3252634.pdfIn PDF document text
    • http://fuwil.soarohio.org/uploads/1/3/0/8/130874113/jabaxosotelibo-mavitudul-volagexijufor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7060/3932/files/80799716731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/deluzopokipejapuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/broken_vessels_piano_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/compreender_o_behaviorismo_baixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1432/3356/files/pafote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8379/0491/files/14721040753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/biology_notes_form_4_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/inverse_auger_hole_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/tukizogagodiwerulegazido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3510/files/scrivener_dissertation_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1879/7724/files/gafaxugakejo.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_off00005f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5F 4696 bytes
SHA-256: 55bb38f973e3f2749d02b23b45a337a1435d90862ee099c2db5ec744f1489d2d
font_01_sfnt_off00006f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 9776 bytes
SHA-256: 3af5b7146ae15a2a76fd7a546913f03d1a3642981ef7969184a64d17c797c828
font_02_sfnt_off000090b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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