Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9548b2d580f2460…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 13:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3e49547749152ec89fe529d454e6488 SHA-1: b05b6c7e3187be08648f47c420d4b326d1270a88 SHA-256: e9548b2d580f2460ad6850a99956e1a60b66db4e531814a25b124673167dd1d4
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to shopify.com domains, which is characteristic of a link farm. One of the primary links, https://ttraff.ru/pify?keyword=biology+major+unc+worksheet, is identified as a malicious redirector. This suggests the document's purpose is to lure users through a chain of redirects, likely leading to malicious content or phishing pages.

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=biology+major+unc+worksheet In PDF document text
    • http://files.mrsoneyscomputerlab.com/uploads/1/3/1/3/131398541/3232550.pdfIn PDF document text
    • http://kopofupu.empowerdecatur.com/uploads/1/3/1/6/131636664/852a9.pdfIn PDF document text
    • http://files.hwah.ca/uploads/1/3/1/3/131382387/e09c12e2.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/1/0432/3573/7755/files/archie_comic_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/81129174823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/xorobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1067/9206/files/wuwejuvoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/gemolazogexavesiwepovigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/zasumakusevadoxusopuleto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/capacitors_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/depiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9102/5303/files/51680981557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/15949943620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/the_american_sign_language_puzzle_book_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/manonapuzadudilirowam.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: fourfilliesfarmok.com 4 samples

Related samples 6

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_off00005c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8B 5476 bytes
SHA-256: b28edda4178367de31b5a2e833bd26a3d8ffb7da0f06ec5149b9ce39338b86ef
font_01_sfnt_off00006f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 9992 bytes
SHA-256: a3880c44f36845533699fd2777fda2619f5789d851fc65d732e8038517a348cc
font_02_sfnt_off00009109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9109 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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