Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fc8fd9027af279…

MALICIOUS

PDF

50.5 KB Created: 2020-08-03 21:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e2af16bd87b5a6d021dee3d1f3d93da SHA-1: 93149b4a6d5f7806cccaf9bfae7d3ad191d0de57 SHA-256: 05fc8fd9027af2797e1dadd34591d44520d5243044657b71227217e70d215ba2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. This suggests the document is part of an SEO link farm designed to lure users to malicious content, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=meditations+marcus+aurelius+penguin+pdf In PDF document text
    • http://files.bubbasdeli.com/uploads/1/3/1/4/131407469/jidomapa.pdfIn PDF document text
    • http://files.thedinopark.com/uploads/1/3/2/7/132740415/6535022.pdfIn PDF document text
    • http://files.debbieturnercounseling.com/uploads/1/3/2/6/132695629/6805287.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/1/0432/1289/8461/files/96414568886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/96510273496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/makiputuwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/demimoxesunanaburetures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/75140898306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/64700077044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/27209935892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/juweliminuxodinelujipixig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4431/5029/files/dudakafojuwokaxolazetesop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/7728977236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5050/files/80262147874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/xxx_passwords_hacked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/34368307483.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F9 5360 bytes
SHA-256: 5b051656effc953699f8d623868c8a3d178e4a11539b412903f7359e5b3c88c2
font_01_sfnt_off0000761e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761E 10180 bytes
SHA-256: 6cd67331ced0f23811a0fe4a291ffac1934181d6f17bde4f008079b1d630fcca
font_02_sfnt_off0000990b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x990B 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
font_03_sfnt_off0000ae23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE23 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71