Malicious PDF — malware analysis report

Static analysis result for SHA-256 82961ac584f6e24d…

MALICIOUS

PDF

45.6 KB Created: 2020-08-04 21:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fbf275cab97124dc0b7059d48e754927 SHA-1: 2ad6cb31a20fb5c6f4f6b6fa56d7778c3dc1b47d SHA-256: 82961ac584f6e24dc1d0653972cb5ae0795044aa6ea77d7dc3e6ff656295b2ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body also contains the same redirector URL, suggesting it is the primary mechanism for delivering a malicious payload. 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=functional+programming+in+c+enrico+buonanno+pdf+download In PDF document text
    • http://files.centeringprayerpensacola.com/uploads/1/3/1/4/131408415/631fd5a884900d0.pdfIn PDF document text
    • http://files.lighthouseministriesworldwide.org/uploads/1/3/1/3/131379832/7514084.pdfIn PDF document text
    • http://files.easw.net/uploads/1/3/2/7/132740214/labunikoxis.pdfIn PDF document text
    • http://zemedat.ponciauparkbowls.com/uploads/1/3/1/8/131871980/lakitafab-nepupaxuzojog.pdfIn PDF document text
    • http://files.perinatalechoimaging.com/uploads/1/3/2/8/132815359/65c7b33.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/1/0431/2354/0124/files/48865954089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/tewepajifasizuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/rigomebexuvoruputobala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/46691793564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/8002836056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/39861699216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/67504028718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/emoticon_rolling_eyes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/accuweather_dover_de.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/bodukeruriruxanalegepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/94772825782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/woxurujusupototonozi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E7 5484 bytes
SHA-256: 69953bc0dc4fe01a8822debf52bc377cb12b4ac5f0b3e915307c4924c9535f46
font_01_sfnt_off00008589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8589 10316 bytes
SHA-256: ac07d4dc712967f2a7048db758284b4f9f0f62eb8ead35a6fe1871ba9b84a471

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