Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57bf777c3bda9cb…

MALICIOUS

PDF

34.1 KB Created: 2020-08-06 16:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41b7a1180ab568682d1df131051f315f SHA-1: 05d0c3eccf476d2e7e32b77d6364de268a9b235f SHA-256: a57bf777c3bda9cb0c38792875b09a98eee60bd786ce1eae82dc506455dbc1fa
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on Shopify. The document body, though partially corrupted, contains the malicious URL and a plausible lure related to 'administration and management in criminal justice'. The presence of a malicious redirector suggests the intent is to lead the user to a harmful destination.

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=administration+and+management+in+criminal+justice+pdf In PDF document text
    • http://files.chineseenrichmentprogram.org/uploads/1/3/1/4/131453907/3259453.pdfIn PDF document text
    • http://files.vidatacos.com/uploads/1/3/0/8/130873941/3162880.pdfIn PDF document text
    • http://files.foryourmilitarymarriage.com/uploads/1/3/2/8/132814415/rezutorukin.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/1/0434/8398/8125/files/antibiotic_resistant_bacteria_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/wazavumomisosugemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/apiculture_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/pidefozajadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/ibooks_annotate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/gorawesagivewagekokuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1559/4399/files/24341404294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/mokupibadofenulaxemufower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/writing_equations_in_slope_intercept_form_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D1 5540 bytes
SHA-256: 068972470be41961763a39e387d5dfc4399e23a6934e48cacf6a295796ee544f
font_01_sfnt_off00005b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B98 9412 bytes
SHA-256: 420d60269db27dce71c9cdd28ac775ad836ce152bf3126a5469b055a708495df

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