Malicious PDF — malware analysis report

Static analysis result for SHA-256 645029f69288ab58…

MALICIOUS

PDF

71.4 KB Created: 2020-08-13 21:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5605e35fb951e9a94e4254cb5a1dc2 SHA-1: 82be50248ab3346c244fad5d82a28efe2ba2a2e4 SHA-256: 645029f69288ab587b5187611c2f712419a3a8bd9bcbaa56267f941516b3ee0c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirectors and SEO link farms, indicating a phishing or scam attempt. The primary redirector URL is `https://ttraff.com/pify?keyword=samouczek+angielski+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf`, which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive traffic to malicious sites, likely for credential harvesting or malware distribution.

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.com/pify?keyword=samouczek+angielski+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf In PDF document text
    • http://files.sebianhealingcenter.com/uploads/1/3/0/7/130775953/7173065.pdfIn PDF document text
    • http://files.k8mcc.com/uploads/1/3/1/3/131380895/a4f69e25a76f48c.pdfIn PDF document text
    • http://files.balancefromwithinwellness.com/uploads/1/3/1/8/131856247/gabugidura_legaviguzu.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/1/0429/9587/5989/files/xisuzovupujekej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/22188652039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8103/files/haryana_b._ed_merit_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/netherlands_flag_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/allahabad_state_university_time_table_2020_download_ma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/types_of_cables_in_computer_network.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/xonukeputugifek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/tudefijopebinetupuzof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/48330670926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taselalodomojobuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/juxonadujazowosogijuvugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1694/4796/files/59233002011.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB04D 6024 bytes
SHA-256: 562f500272a45e059aa80fd2253ff0a40a4d7dce634dbdd8ccaf176b4832be07
font_01_sfnt_off0000c41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC41E 12336 bytes
SHA-256: 8540251aee941cbd1b74db9c549ba9011111c62d05a3e32974297991860bd531
font_02_sfnt_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 16064 bytes
SHA-256: c72b90224a3819ecb4df95d23212449dcf7016745c7ee066fd85b325348d32e1
font_03_sfnt_off0000ffb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3