Malicious PDF — malware analysis report

Static analysis result for SHA-256 66a430a562876595…

MALICIOUS

PDF

48.9 KB Created: 2020-08-04 19:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd6fb0a0285e2f11e40f698695f77b72 SHA-1: 652589a69fbb6b23f820498e4fa274e534cf78c3 SHA-256: 66a430a562876595e90793e18413a31a44c18b609eee4bdd274d2b732e04c637
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a large number of external PDF links suggests an attempt to create a link farm or distribute further malicious content.

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=aditya+hrudayam+slokam+in+tamil+pdf In PDF document text
    • http://files.hebshf.com/uploads/1/3/1/8/131871462/7644777.pdfIn PDF document text
    • http://lurevemav.monarchtennis.com/uploads/1/3/1/8/131871462/venumataloxu-sejofo-fazijixekuval.pdfIn PDF document text
    • http://files.neal-insurance.com/uploads/1/3/1/8/131857334/a91db9bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5266/1912/files/givejesep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/piluboduvojimilojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0499/7271/files/fight_cave_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/88049729518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7913/0524/files/sojuwozowetaluxofevuzin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/lipifogagopujinet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/89081528196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/rezojibamuxozirinupodajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/82068695094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/black_mirror_white_christmas_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/luzikakadarufuxa.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 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_off0000626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 5436 bytes
SHA-256: f3b869898f8ba9e6132201a2cac82342ce92fd4b041a260ad6eaeafd84a35e70
font_01_sfnt_off000074c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 7696 bytes
SHA-256: b578365b51b44ad859140ff5162df1b80498d72bae300421e05d0d9e33e21f39
font_02_sfnt_off00008ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD4 14180 bytes
SHA-256: e0d798768803d73be828c4cd1194585c316fdb4e2b094ba081ac0da39d28abb6

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