Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1a007ff80be7ce…

MALICIOUS

PDF

46.4 KB Created: 2020-08-11 12:50:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c222e9fe457d3066434cd06794753e27 SHA-1: c7cfcc4ec062f54465e4d4a34fb2eb65263ca86f SHA-256: 3f1a007ff80be7ceab6e1d3b75208c251455497e5fe680eca92dad8abf90b700
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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=case+study+format+psychology+pdf In PDF document text
    • http://files.dylanhurwitz.com/uploads/1/3/2/6/132681342/tosazi_fomosurovogi_taveb.pdfIn PDF document text
    • http://lolube.tampapanhellenic.com/uploads/1/3/0/8/130874330/2d3986.pdfIn PDF document text
    • http://files.laacartscenter.org/uploads/1/3/1/1/131163879/jawezuvosekonoti.pdfIn PDF document text
    • http://zevuga.nomeatmarch.com/uploads/1/3/0/7/130776433/5845651.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/1/0437/6972/5080/files/cessna_172m_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/richard_williams_animator_s_survival_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3035/1770/files/benjamin_graham_interpretation_of_financial_statements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3823/5031/files/romekutopelim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/el_conde_de_montecristo_de_alexandre_dumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/kifusosirutodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/shape_and_arrangement_of_bacteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/73593830662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/5399862399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/telasoligiruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6152/7206/files/evermore_alyson_noel_free_download.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_off000067ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 5420 bytes
SHA-256: 553b270a7054521dc0e8df16108033d423b704310d5eedcdb3c69b7ce968a884
font_01_sfnt_off00007a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A48 10852 bytes
SHA-256: 6411e6facfd37bb06f7cf3dc75cf80470a9ada61256ef3db3d3ea6b02e473e6c
font_02_sfnt_off00009e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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