Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeec3abaf01e6654…

MALICIOUS

PDF

67.4 KB Created: 2020-08-12 18:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66bc01a64a6a4e8961dc631752b31837 SHA-1: 07dc62d580e25035cc32a0b78a6be47246365684 SHA-256: aeec3abaf01e6654ac9d3d23c958ae45f8da0c999b9402b2fd554b384fda1821
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a link to a 'bachelor thesis computer science pdf'. This heuristic, combined with the presence of numerous other links to external PDFs hosted on Shopify, indicates a link farm or redirection attempt. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=bachelor+thesis+computer+science+pdf In PDF document text
    • http://gerugidib.springfieldfrontiers.org/uploads/1/3/1/4/131482976/6319942.pdfIn PDF document text
    • http://files.paladin.care/uploads/1/3/0/7/130775518/takilijodu_pokolidu_vubudu.pdfIn PDF document text
    • http://files.naturalpurposebysandy.com/uploads/1/3/2/8/132814343/9690364.pdfIn PDF document text
    • http://files.hillcountrymarines.org/uploads/1/3/1/4/131483344/zonaralu.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/1/0437/7945/7175/files/99505497988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9533/0717/files/eastern_shore_craigslist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/28449964102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2518/files/18047993481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/nawokuvidowave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/mifuvekolorutiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9563/files/tusulotefivufunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7996/1495/files/julelisimovitije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8731/4590/files/73959585937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/canon_powershot_sx720_hs_manual.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_off0000ca1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1D 5444 bytes
SHA-256: ec2fe6350f4d06a6071b600df22dc0127f8be6dca29222359d068801701d6645
font_01_sfnt_off0000dc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC75 10504 bytes
SHA-256: f6451d64775445b113b34fd1edb0fe80bae6b07741669b4ca111254162e7b18c

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