Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e460711c0f6097…

MALICIOUS

PDF

113.6 KB Created: 2020-08-10 05:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaaa56027b36bad83e4368a55c3b1661 SHA-1: ea788b7c2db73456cec0e8e0625e68a4537b47e9 SHA-256: 42e460711c0f60972dbe82b3552293d4260ddc66b09b4d9ae68a1b7807408a61
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a document about the bubonic plague. The ML classifier strongly indicated maliciousness. The document body itself is heavily obfuscated but contains the malicious URL. The presence of a link farm heuristic suggests a broader campaign to distribute malicious content.

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=bubonic+plague+history+pdf In PDF document text
    • http://files.robpedley.co.uk/uploads/1/3/0/8/130874170/jiwatutujobu_xagazamej.pdfIn PDF document text
    • http://files.drywalltucson.com/uploads/1/3/1/4/131438313/xosumidepurab_lunobovapupo.pdfIn PDF document text
    • http://files.adibartolopercussion.com/uploads/1/3/0/7/130776350/7a3e1a01cd4943.pdfIn PDF document text
    • http://files.parenting-examiner.com/uploads/1/3/0/8/130874257/e5007341985.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/1/0428/1748/7011/files/kejotosijirelujiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/92858362675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9126/3649/files/tratamiento_rinitis_alergica_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/mazukud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/vilepab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/google_analytics_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/pokemon_colosseum_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1834/6915/files/poblamiento_de_america_teorias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/mavaremesefudoxefasubix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6000/files/19568091555.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00016768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16768 5708 bytes
SHA-256: 8dd1efdd07009a6ea4482f618fc6c1695059e7dab53059a4dff4c60946e80c7d
font_01_sfnt_off00017aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ACA 12280 bytes
SHA-256: 0d7f1b832654f5661a7a8c65b5398a6d343025b4c1a6335f75a085809c05aadd
font_02_sfnt_off0001a362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A362 16180 bytes
SHA-256: e938612e7f68c7377edc14a94d56d97ec3d5ab0e1d62d66081f7913b8668390e

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