Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b58f731d77f231f…

MALICIOUS

PDF

57.8 KB Created: 2020-08-27 19:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ef0acf11e5f5f3320c57bb22588c47e SHA-1: bcff1464fb783896e2d713460e36b4d9d68b5e76 SHA-256: 7b58f731d77f231f46cf5b422dc31a905786cd4245c2d5fbf95d8e132abf1d19
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially obfuscated, includes the URL 'https://ttraff.cc/pify?keyword=story+of+antigone', indicating a lure to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=story+of+antigone In PDF document text
    • http://files.stjameshaubstadt.com/uploads/1/3/0/9/130969003/nirilakid.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/1/0432/4599/4146/files/hallie_berry_in_monster_ball.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/kujunakaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/wordly_wise_3000_book_7_lesson_4_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/sezuzaberidizuperid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/igcse_acids_and_bases_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/68582800829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/74259846917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/poxifimipovabumax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/1284434446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/bumogeledudokufosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/boomslang_platform_pedals_weight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/37488349777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/57552837807.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E78 17532 bytes
SHA-256: 50ce0df02c83eb1d8cf4f7d2338bc4c0324e7bd9bbdc1bb603d69b5115bd980a
font_01_sfnt_off0000a62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA62D 4928 bytes
SHA-256: 5df583e2842056f4bd802c36d444a613b79f09d0520ac3909058b92d64ba70c3
font_02_sfnt_off0000b706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB706 9904 bytes
SHA-256: 0a8d2e8a7b7d0eedfdcf82c64e410aed20c4f6807e1e8f8919fc9c584cc8402a

Open this report in the interactive analyzer, or submit your own file for analysis.