Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c948a0a5c12aebb…

MALICIOUS

PDF

46.4 KB Created: 2020-08-24 22:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 271a64d91f65d5b899aebcec62600754 SHA-1: b3ecb9de424b17422a66ff6fc82e9bcc620b3d8a SHA-256: 8c948a0a5c12aebb16ec3f1907d9de0db5c19eb0292aefd4cf3af1c1980f782a
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a link to an 'Avengers 3 trailer'. The PDF also functions as a link farm, pointing to numerous other PDFs hosted on various domains, some of which are unknown. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector suggests the intent is to lead the user to a malicious site for further exploitation or phishing.

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.com/pify?keyword=avengers+3+trailer In PDF document text
    • http://files.thedetour.org/uploads/1/3/0/8/130813953/b4c46679614576d.pdfIn PDF document text
    • http://wobokilul.audaciousadmin.com/uploads/1/3/0/9/130969335/164420c4a.pdfIn PDF document text
    • http://files.projectdiana-eme.com/uploads/1/3/1/4/131453506/511728b164b192c.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/1/0433/1926/3397/files/define_coliform_bacteria_science_term.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/40478987224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7069/files/pokemon_tower_defense_hacked_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/78951495918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/47884051932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/73438947188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1860/0103/files/71356967627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/algebra_math_book.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 4

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_off00006c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C01 4744 bytes
SHA-256: dd011c281445360ffa53891f09ead3e998c181e8218b9f9d509abf50d8b75811
font_01_sfnt_off00007c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1C 10128 bytes
SHA-256: db8163a52d3528ab9198639df22708ed4878e3fd4b960faa648b8d97da46854d
font_02_sfnt_off00009ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED5 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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