Malicious PDF — malware analysis report

Static analysis result for SHA-256 c486fa198422f189…

MALICIOUS

PDF

52.4 KB Created: 2020-08-22 04:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b488009945e1c93c041977ad0fd7d14 SHA-1: ec55e8e1976fdec1efb0d54dc05d30ecfc79606e SHA-256: c486fa198422f1898816bc242578379f900770ac66296d5c2adf90ad7499e17e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=format+xml+request+in+notepad%252B%252B', which is flagged as malicious. The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt, aiming to drive traffic to potentially malicious sites.

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=format+xml+request+in+notepad%252B%252B In PDF document text
    • http://files.cewl-horses.com/uploads/1/3/1/6/131637219/xarel.pdfIn PDF document text
    • http://files.greeceny468legionpost.com/uploads/1/3/2/3/132303286/tufumurejovige_jozifodipot_sipuzu_befani.pdfIn PDF document text
    • http://xelikatib.getontheice.com/uploads/1/3/2/7/132740214/xusikenipanup.pdfIn PDF document text
    • http://files.jennifertyao.com/uploads/1/3/0/7/130740589/savozijukuz_wopejuri.pdfIn PDF document text
    • http://tefaje.meridithmckinnon.com/uploads/1/3/2/6/132682790/661569.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/1/0434/7029/1096/files/tom_greever_articulating_design_decisions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/greek_alphabet_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/78186720728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/suwujilurapixot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/52472808110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/76597936817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/31142158981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/types_of_budget_in_management_accounting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/xowejorugivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2328/3862/files/15592257890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/agency_problems_and_accountability_of_corporate_managers_and_shareholders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/56439120126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/sharpness_1000_sword_command_1._14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7483/7918/files/backhoe_loader_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/fuvewezilabomewive.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_off0000856b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856B 5252 bytes
SHA-256: 9ded7d7b74c98828561c9c70a0331713be932d6882f913a6b92ffdc9072c76cd
font_01_sfnt_off00009730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9730 14204 bytes
SHA-256: 3c860408310e9f87d3bc8add535170dca3155d21aa23f6f159e90e6eb0b6920b