Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b24020b0dffe5aa…

MALICIOUS

PDF

56.9 KB Created: 2020-08-23 11:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60a46d130d435f35db9fb95e13421469 SHA-1: 488514f8cb82c2446b53a94595a0f51a8377eb3c SHA-256: 1b24020b0dffe5aac958c1a5a575786ec2cb1a9569be679eb584c3022d4e77f1
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection scheme. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cetacean+poem+pdf. While no scripts were extracted, the structure and heuristics strongly indicate an attempt to lure users to 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.ru/pify?keyword=cetacean+poem+pdf In PDF document text
    • http://files.mimisbooksandmore.com/uploads/1/3/1/3/131384660/xudokorud-xerufov.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/1/0438/4423/9510/files/duguju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2360/0538/files/d_n_a_full_form_in_medical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1856/5270/files/geometry_circles_and_arcs_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/simon_sinek_infinite_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4652/6376/files/new_bhakti_dj_song_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0528/files/57030993779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/84519959049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/sobelurejavemeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8978/8070/files/oxford_advanced_english_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/14887562128.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 5

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_off00009655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9655 4756 bytes
SHA-256: 460c7ccc9cccb02656bfe51531e5d7e57c970022f1ebc028095d24006e3a54d9
font_01_sfnt_off0000a664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA664 10120 bytes
SHA-256: 20c87a47b83fc30304f2faa509f13e0f0eb6b104ca77e9170606b4750d330f60
font_02_sfnt_off0000c90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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