Malicious PDF — malware analysis report

Static analysis result for SHA-256 f31b4abf69948902…

MALICIOUS

PDF

51.1 KB Created: 2020-08-03 03:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9a8b24ecc9940282297c497a9cd137 SHA-1: 56f1f946ed4a1f55b79a16fd4e5ce05311744502 SHA-256: f31b4abf699489024f4552496749de5119b4e198cdfb4f93e8870d0ea92e3d41
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to its inclusion of a link farm containing numerous external PDF links. One of these links, 'https://ttraff.ru/pify?keyword=logic+incredible+true+story+leak', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to malicious infrastructure. The presence of a large number of links, many hosted on seemingly benign platforms like Shopify, indicates a sophisticated attempt to obscure the 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=logic+incredible+true+story+leak In PDF document text
    • http://files.lakestream.com/uploads/1/3/0/7/130739892/jagema.pdfIn PDF document text
    • http://files.helenernstlongarmquilting.com/uploads/1/3/1/1/131164520/f2fa4c1de3.pdfIn PDF document text
    • http://files.issaquahband.com/uploads/1/3/0/8/130814858/ximefodorij_gudipu.pdfIn PDF document text
    • http://files.lovebudskincare.com/uploads/1/3/2/6/132681579/9504224.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/1/0430/6812/9431/files/kidudixasojuwikijetudekam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/930433558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/gesekitevitajulokinod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/20460015035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/kusunivolojijov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/wipewux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/23445524394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/kurap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/goduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/16746118297.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 4

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_off00007c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C37 5236 bytes
SHA-256: 0b476f79c637dd7d9acce0f49a67389ceb7b6d4d2d1f068b21a4585735b66552
font_01_sfnt_off00008e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1A 10444 bytes
SHA-256: f6ff7d61d6554c4cbb1cdc0ea5d71c69b0f25f2a2d617302058fc043ca01f025
font_02_sfnt_off0000b17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB17C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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