Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8399064a7a2c25…

MALICIOUS

PDF

45.4 KB Created: 2020-08-20 04:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 698975b5a894f68103d4e9dea773edbe SHA-1: e51359d718742a9added495dc9668255f25f1f50 SHA-256: 7c8399064a7a2c253609998d153aea474ec303caeebff755f0e29cb8eba3a74a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body text, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a lure for free movie downloads. This suggests the document is designed to redirect users to malicious sites, likely for phishing 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.ru/pify?keyword=airplane+full+movie+480p In PDF document text
    • http://buridid.mulemankawasakimuleusedparts.com/uploads/1/3/0/8/130874049/zenepeze_kovobek.pdfIn PDF document text
    • http://pajener.thaischool.org/uploads/1/3/1/6/131636825/163995.pdfIn PDF document text
    • http://lejedef.kenziemack.com/uploads/1/3/2/6/132681218/sopaxa.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/1/0429/7513/3859/files/faxinatitolakuzut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/nularu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/residential_lease_agreement_template_nsw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2622/7093/files/suwojusebel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/zugotisadedinubexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1658/files/dalunolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4115/9333/files/arya_allu_arjun_video_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/15345381054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/69377990010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/secrets_cello_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3704/0538/files/algebra_2_word_problems_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/the_handbook_of_stress_neuropsychological_effects_on_the_brain.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 5

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_off0000661f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 5144 bytes
SHA-256: 0d60c9103e181a3008cf93191d65cc5ce9c6b84fb0b802564bd19f7beaa668dd
font_01_sfnt_off0000777d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 10384 bytes
SHA-256: e37b242e5861da2c50b3cf80454d73ea9259fe7de6fc8b8cea298413d458b913
font_02_sfnt_off00009af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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