Malicious PDF — malware analysis report

Static analysis result for SHA-256 a67a61b408c37a37…

MALICIOUS

PDF

53.2 KB Created: 2020-07-31 14:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93368b6cf44251e0eea4138d1432a085 SHA-1: e041a4da1ffe55012a337b15a30c7da6e21413b5 SHA-256: a67a61b408c37a3791acdcba5c971320da7fd5ac827c35112cee739b5c66410b
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links redirects to a known malicious domain (ttraff.ru), indicating a phishing or redirection attempt. The document body, though heavily obfuscated, suggests a lure related to a 'Braves schedule 2020 pdf'. 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.ru/pify?keyword=braves+schedule+2020+pdf In PDF document text
    • http://files.wellnesswednesdayswithkatie.com/uploads/1/3/1/1/131163512/7e84ba20e07fa44.pdfIn PDF document text
    • http://files.michelle-kessler.com/uploads/1/3/1/3/131398338/179b8a12186d.pdfIn PDF document text
    • http://files.hbluxury.co/uploads/1/3/1/4/131437576/4054971.pdfIn PDF document text
    • http://files.maggieshao.com/uploads/1/3/1/6/131636862/75c7e2b3b2.pdfIn PDF document text
    • http://files.zalzabik.com/uploads/1/3/2/6/132696154/mavizoso.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/1/0432/6175/5547/files/xariputadatuseradixeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/pilew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/fupenatobesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/54314847090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/gizep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/turemijeligejobezabewot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/74446533974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7364/2389/files/letipazisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/25713479556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/gifiwujavagosigujaremoviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3429/4937/files/rilalasaxipune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/76425453978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/18564396840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/tefoxalomidogovirofuwi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 5164 bytes
SHA-256: e6b733fb25d7889c9f1546d50c284c821f399ad28c0b36a681af24a1aad63257
font_01_sfnt_off00008d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D58 10444 bytes
SHA-256: cc044367b006385fa4c5672524ff0284f51679acb59c9fa647283ba5be682a0a
font_02_sfnt_off0000b145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB145 16428 bytes
SHA-256: 04f7f01f0e81293101bff3dd2fde270aec15dc769f0ca1dde224ef3aeb45275a