Malicious PDF — malware analysis report

Static analysis result for SHA-256 13400796922d7b8e…

MALICIOUS

PDF

48.2 KB Created: 2020-08-06 03:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8e963de9732f9abbc102cfab83b2c71 SHA-1: aad8a250125a7ae18d9d5809b26a718c6dc6297c SHA-256: 13400796922d7b8e96c255507a028c3cb1c76f4a2165aeae749effbfa2d1b204
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service disguised as a worksheet download. The primary redirector URL, https://ttraff.ru/pify?keyword=volume+and+surface+area+of+compound+shapes+worksheet+pdf, is known to host malicious content. This indicates a phishing or scam attempt using a link farm to distribute malware or lead users to fraudulent sites.

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=volume+and+surface+area+of+compound+shapes+worksheet+pdf In PDF document text
    • http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdfIn PDF document text
    • http://files.squashdreamers.org/uploads/1/3/1/6/131607010/xizugepa.pdfIn PDF document text
    • http://files.a-teacher-travels.com/uploads/1/3/1/3/131379904/3be2adb84.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/1/0435/7105/2707/files/43720953589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/22138320432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/rowobukupes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/15184500724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/71069229271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2140/1237/files/37341110256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2772/5474/files/pivegexadaxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/80490449195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/convert._psd_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/94940160635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/31251032293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8414/4037/files/arabic_english_dictionary_hans_wehr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/83197055144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3286/1079/files/psoriasis_treatment_guidelines.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_off00007de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE0 5516 bytes
SHA-256: d59bcb2a4065867f6c32ab94a6edd3ca3064b90a2c6dc9f8644b496555a13a87
font_01_sfnt_off0000908f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908F 10180 bytes
SHA-256: c0e17434ae59a6dd1604073757f29514a7f9d958286877d80137eb49c7977532

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