Malicious PDF — malware analysis report

Static analysis result for SHA-256 732a46795438a3f6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 07:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33643c293376dd310236f75870601b00 SHA-1: d18150472fcf5ce009e052b0c5f2938b80dba39e SHA-256: 732a46795438a3f6cfa68eb47426fb3327108a2455172c300473564baba106d0
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, disguised as a free calendar template. The ML classifier and critical heuristics strongly indicate malicious intent, specifically linking to a redirector known for distributing malware. While no scripts were directly extracted, the PDF structure and embedded URLs point to a phishing or redirection scheme.

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=free+printable+july+2018+calendar+template In PDF document text
    • http://files.carabrinkmans.com/uploads/1/3/0/7/130738748/8471322.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/1/0439/3802/1544/files/jutuxebinegep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/68982481503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0647/3886/files/fitavuzaligisakek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4107173541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/23006659648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3958/0575/files/jpg_file_merge_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/12067823505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/lalarujezoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/customary_international_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/acca_f9_study_text_2020_18.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 2

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_off000068b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B8 5836 bytes
SHA-256: 3a9597f28fd31fd0b94a01ad021f3eeb42dd96f7e29ae3983a45c87598bcfc71
font_01_sfnt_off00007c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10120 bytes
SHA-256: 6a8a165911f2b985f00dbde88cdc4a20ccc0bf632a6d0854ccc0d0ef470abb81

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