Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a741b8747755207…

MALICIOUS

PDF

44.7 KB Created: 2020-08-24 09:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1981f43905a3a84398a49e143cf461e SHA-1: b225b0a2b5db9b1a4a7be78f1165e1deefc0a052 SHA-256: 3a741b874775520719a9cc818047d70e5f436c692eda578caca2261ae195e79a
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The presence of a 'download button' lure reinforces this. The primary malicious URL is https://ttraff.ru/pify?keyword=responsive+email+template+editor, which likely leads to further malicious content or malware. No scripts were extracted, limiting the analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=responsive+email+template+editor In PDF document text
    • http://files.just4womendoc.com/uploads/1/3/1/3/131384025/58dbb8c76c.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/1/0430/5554/6517/files/28403215908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2529/3724/files/sugib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/c_diff_treatment_guidelines_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2878/7878/files/maviredezogenowasepivona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/69315940254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/lobezevebirexelilexesatir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/75134279894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/radopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/5248/3996/files/angry_birds_game_free_play_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/mutorerak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/27971482188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7334/6463/files/dora_colorado_jurisprudence_exam_study_guide.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 2

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_off000070b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 5172 bytes
SHA-256: f9cbd13d0ee1af0f8a46db490165140646c1c6cee80cf612f483b54811a5185c
font_01_sfnt_off00008237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8237 10636 bytes
SHA-256: f4061f8345b7726b5817d9bb0ef68c63cebd134a1e02f0573f9d8239c9352fcb

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