Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be55f4afa5ae159…

MALICIOUS

PDF

54.6 KB Created: 2020-08-21 16:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 855b708a0e67dca856387bae009e6bea SHA-1: 31004d2efa17f90536d8a137e6797ffeb2cfbf34 SHA-256: 3be55f4afa5ae159b466be987e3edb904eaf2ef3b9688f535da4cb4775a3be9a
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a 'haulier declaration template'. This suggests a phishing or social engineering attack aimed at redirecting users to malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

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=haulier+declaration+template In PDF document text
    • http://files.calvarygo.org/uploads/1/3/2/6/132696465/vifowu_naziretuwewu_zojukelizo.pdfIn PDF document text
    • http://files.coldchocolatemusic.com/uploads/1/3/2/3/132303245/tiwaxoradije.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/1/0436/0955/5107/files/centrifugal_pump_performance_curve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/bovadegawalote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/weburuzadijatilezisaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/sudakidaronod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5304/6165/files/surah_al_mulk_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3388/files/65354044804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/nudata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/aetna_better_health_reconsideration_form_florida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5911/6182/files/todudijorojojesigof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/86233981471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/adventures_in_babysitting_2016_full_movie.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B19 5000 bytes
SHA-256: dc07bed71618b60cd4ebe3ada973251592c6e72762f7cd98d5915c6a86586c25
font_01_sfnt_off0000abf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABF8 9920 bytes
SHA-256: 2c8b6093ea3e7b3d59bdd8dd8bc0e24f38558c29bda50b05f5b6cf5f1011ab23

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