Malicious PDF — malware analysis report

Static analysis result for SHA-256 7191496ddfd50ed7…

MALICIOUS

PDF

36.9 KB Created: 2020-08-04 22:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f59163eec44022c46c644af7a032b5fc SHA-1: eca5688729dff5b6decf63522a5ae54ae8fcc6b8 SHA-256: 7191496ddfd50ed7887c2bcd4129dfd1e8179b86000e7afc5f6b1a8ed66392f2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body text, though partially corrupted, includes a URL that appears to be a lure for downloading a manual, which is likely a pretext for delivering malware. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=audacity+2.+3.+2+manual+pdf In PDF document text
    • http://files.rosebayrotary.com/uploads/1/3/0/7/130739557/3452031.pdfIn PDF document text
    • http://files.partybcause.com/uploads/1/3/0/9/130969944/315890.pdfIn PDF document text
    • http://files.christalineadrianti.com/uploads/1/3/1/1/131164452/8581398.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/1/0431/4267/6636/files/bovorewizijoboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/84056146836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/26481970571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7577/8198/files/whirlpool_cabrio_platinum_washer_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/tefinazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/xetakojipuxuparafisotikup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1915/6130/files/bagozatajuzububaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/62930445986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94215193789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/resignation_acceptance_letter_sample.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 6

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_off0000517e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517E 5444 bytes
SHA-256: 17ffa4c8df1dda78e924815b8244f7c8f77399936d07fa8782b5c82c76e2c2b2
font_01_sfnt_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 10244 bytes
SHA-256: 0bf0b97933c9ea08ae9aa460a3b4e6091715bd4a48f1c1b9edb1a0f01663a6c4

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