Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b638fe86d02527f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 07:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69f2fe3911455a0cd671e2c7a32f79ea SHA-1: 684a92e9a7e9f4f6b3aa9f2af51cf22d771fb695 SHA-256: 3b638fe86d02527f2fbacd969c5ac8806fa852252812fca17bb2b4a50cbc1ef8
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised with a lure related to the 'Wings of Fire' book series. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The primary malicious link is https://ttraff.ru/pify?keyword=wings+of+fire+book+9+pdf+free, which is likely used to redirect the user to a further malicious destination.

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=wings+of+fire+book+9+pdf+free In PDF document text
    • http://files.alexandriatalley.com/uploads/1/3/1/3/131381675/tulelisud.pdfIn PDF document text
    • http://taxubogu.construction-industry-software.co.uk/uploads/1/3/0/9/130969746/822932ed3b96f.pdfIn PDF document text
    • http://files.interfaithutica.org/uploads/1/3/0/9/130969218/9093583.pdfIn PDF document text
    • http://files.jrlockandsecure.co.uk/uploads/1/3/0/7/130776503/90f75fc8a74d.pdfIn PDF document text
    • http://files.msrhondajwilliams.com/uploads/1/3/2/7/132741535/gasixodub.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/1/0431/3173/2132/files/25100006791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4680/files/baba_yetu_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/fulare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/10100805191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/32149277277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/vologopanazux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/pazowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/41855261565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/anesthesia_technician_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/terraform_aws_client_vpn_example.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 5340 bytes
SHA-256: adc3c3f774a2dbfd5517d21d7014aae50b76770b4e666406a27b2aa1ea768a70
font_01_sfnt_off0000718c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 12968 bytes
SHA-256: 6b9428c197602a5ae97098ec6573782ef65b072423850b03d341fcddb1c7f96e

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