Malicious PDF — malware analysis report

Static analysis result for SHA-256 729374731d6c3059…

MALICIOUS

PDF

34.7 KB Created: 2020-10-08 02:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 309bd255d684cbfb64ea19b2fa03db32 SHA-1: 722a221dc84c7ce2c7cfacc6202f84b0c949b514 SHA-256: 729374731d6c30595d1105e480369219885cf5f7c7cdf35a2812efc5be5a351d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/pify?keyword=gamestop+app+apk In PDF document text
    • http://files.rootack.com/uploads/1/3/2/3/132303282/simevezaj_ziwexikaja.pdfIn PDF document text
    • http://pebezexej.victoriakeithcakes.com/uploads/1/3/0/8/130874124/7073630.pdfIn PDF document text
    • http://bejutoxe.mydiyplace.com/uploads/1/3/1/6/131607254/5054924.pdfIn PDF document text
    • http://jitima.standrewscathedraldundee.com/uploads/1/3/1/0/131071191/lomebamatapet-kunexupekolaje.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/1/0433/6871/0300/files/faxemubuxokevaraperon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4581/0087/files/21888411583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2549/8780/files/martin_senour_auto_paint_formula_express.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6957/files/civil_war_timeline_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4531/8567/files/fire_inspection_checklist_mn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef88194-22a5-4609-86c1-05065a80cee3/70530384633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c056385-8473-4dc5-bb18-d8e0166d8fef/95137532297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30f84853-d85e-4d4b-bcc7-4459c6e97bc9/figajexidomoxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62a1a9a7-f1e3-4698-a3eb-1d9fe2d5fa0b/38018766354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/377cd85a-678e-442b-880d-b6ab044704b6/61225958478.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000496f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x496F 4932 bytes
SHA-256: e8b7399a36f620464fe83919ecbc45a3fba3b858d9cebab3978c71a646597ce9
font_01_sfnt_off00005a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A30 10628 bytes
SHA-256: 3a46621d16734156d99a81f7e4a1b21a857baf53bda1efeb66f5e538a454691f