Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e121d2fb2f5e479…

MALICIOUS

PDF

43.7 KB Created: 2020-07-24 06:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 422d70a53b71dcc26d85fa1ff06d72a1 SHA-1: 312a59301137a4a332d31bd25b8b2befef39039a SHA-256: 8e121d2fb2f5e479b3b4f1387719565b4744a3915bce831f725702c4f4986027
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to a '10th marksheet loan process'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. The primary malicious IOC is the redirector URL.

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=10th+marksheet+loan+process In PDF document text
    • http://files.jck9services.co.uk/uploads/1/3/1/4/131437626/xabazubasal_zabavawo.pdfIn PDF document text
    • http://files.sherrykloster.com/uploads/1/3/2/6/132696174/2eaf50152d002.pdfIn PDF document text
    • http://files.the-bookaneer.com/uploads/1/3/1/4/131437194/95b598116178.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/1/0433/0687/7080/files/80463449019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/72475461001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6050/2421/files/dodupototamanin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/jezasose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/22354743997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/64215125527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/xenamiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/60713697790.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 3

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_off000060ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 5076 bytes
SHA-256: 77b2fcf5fd1201f6704e13f9cdca3212d5ca52114e9c900de64a17ec34cc32d0
font_01_sfnt_off000071f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F9 14940 bytes
SHA-256: 8c3eb63b8b50c875931c5910235bd074f79f64698026e8e5e09361685457a34c

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