Malicious PDF — malware analysis report

Static analysis result for SHA-256 a312a56d2d320e58…

MALICIOUS

PDF

43.0 KB Created: 2020-08-16 20:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 267fb0f744cc5fd8c45030e48034a0cb SHA-1: 8f065270126f5bd607f690609ef8ea901139ac01 SHA-256: a312a56d2d320e582446657a9c7e403b99d356c74591f18aece97ce66c455434
202 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'recruitment application form' and embeds multiple links. One of these links, 'https://ttraff.cc/pify?keyword=cantonment+board+chennai+recruitment+2018+application+form', is identified as a malicious redirector. The PDF also hosts a link farm pointing to various PDF files on cdn.shopify.com, with one of them being 'https://cdn.shopify.com/s/files/1/0434/2808/5912/files/wopedoxuwuwerijuf.pdf'. This suggests a phishing or social engineering attack aiming to redirect users to malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=cantonment+board+chennai+recruitment+2018+application+form In PDF document text
    • http://files.almabryantyearbook.com/uploads/1/3/1/4/131453615/8281207.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/1/0434/2808/5912/files/wopedoxuwuwerijuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/nezolebizide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/12733671679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6535/1073/files/50026743141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/99037523808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/64900626807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/nadofiniduzonisosifigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/accounting_and_finance_terms_and_definitions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/ramekixopepewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/83042384762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.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
🗂 Part of campaign: almabryantyearbook.com 3 samples

Related samples 1

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_off000068af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AF 5780 bytes
SHA-256: e9d5c24d60f4f0e8a4cf4180ef7473cfb59800d2879673ab9a2f70cce07e9df9
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10060 bytes
SHA-256: c4adb6b98178ebac2518958203f8a667938d704306246d1ec13b1afb0e5b71e1

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