Malicious PDF — malware analysis report

Static analysis result for SHA-256 992a9e542fee555b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-08 00:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9368e6723e59bcf8e5a80da7841d71d0 SHA-1: 309bbe8bd68f1538425e89c13c5cfddf2f4f0984 SHA-256: 992a9e542fee555bc68479a45eddccdaab9f0dee1f679876ec4541259a7ea18e
214 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=brain+manipulation+pdf'. The document body, though heavily obfuscated, contains text fragments and URLs consistent with a phishing or scam lure. The presence of numerous links, many hosted on Shopify, suggests an attempt to create a link farm for SEO poisoning or to distribute malicious content. The heuristic 'SE_CALLBACK_LURE' further supports a scam or phishing context.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=brain+manipulation+pdf In PDF document text
    • http://files.castrogate.com/uploads/1/3/0/8/130814279/patonekavo.pdfIn PDF document text
    • http://files.akiyunlee.com/uploads/1/3/1/6/131606198/zafureb_nivefopanebi_pibipegorod_bejurezo.pdfIn PDF document text
    • http://files.theauctionofmanythings.com/uploads/1/3/0/7/130775734/meboguripe.pdfIn PDF document text
    • http://files.mytpnoa.com/uploads/1/3/0/7/130775639/munuwamen.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/1/0433/4216/8218/files/timinetuwufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/1970413554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3633/1419/files/dnd_5e_wild_magic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/fisir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2176/0672/files/37667737659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/banivujasedoruxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/34190822874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/10083724060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/3524860440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/fosikeruxopaxikexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/86837888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000698d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 5056 bytes
SHA-256: 20b06692e01410d0449bc91cd503f3ed710ad70edcbf9e6b742a0e8ab04cd6a9
font_01_sfnt_off00007aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA9 10008 bytes
SHA-256: d29e0878e616d9d4a582322c5f142e899c69db40624aa99fca77a0b0fa6b4cfe