Malicious PDF — malware analysis report

Static analysis result for SHA-256 2044510dceb42cf4…

MALICIOUS

PDF

52.1 KB Created: 2020-08-24 11:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d87af3cc3f7b5af31ec764f280c89d2 SHA-1: 361a70c081a6fda9a783801fbb99f6a3ecdde84d SHA-256: 2044510dceb42cf4297ec5b660e9bb6e1f563c892917925113d49a8d84fb9adc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to a company letter template. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt.

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=introduction+company+letter+template In PDF document text
    • http://files.bowleylockcompany.com/uploads/1/3/1/4/131452815/nopizusebobobi.pdfIn PDF document text
    • http://files.myscarpaalta.com/uploads/1/3/0/7/130775518/af2bfa70b8e5421.pdfIn PDF document text
    • http://xisepuxuk.andygibsontv.com/uploads/1/3/1/0/131070313/nujixexit.pdfIn PDF document text
    • http://ligepu.madetobellc.com/uploads/1/3/1/4/131438539/625d6ecb26e.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/1/0431/3058/5239/files/21237602188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/82395286195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/africa_cup_of_nations_2020_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/mevogimoraveda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/lojegedoferazesusotuwibix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/kuvogivaxuzuxunojup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7853/3791/files/how_to_speak_french_fluently.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3918/7104/files/participatory_action_research_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/beethoven_biography_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/selected_topics_inorganic_chemistry.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 7

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_off00008231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8231 4960 bytes
SHA-256: bcfee5804246ca7f93cfaaeccbb3e58650db6df6ff151fa406d349ff55efdbe1
font_01_sfnt_off000092f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F1 10000 bytes
SHA-256: 43c852be748935b7468bccfd636d1ecafc68bdc31328fc39570b39bdd37ffc39
font_02_sfnt_off0000b520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB520 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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