Malicious PDF — malware analysis report

Static analysis result for SHA-256 9626c1ea98d6b85d…

MALICIOUS

PDF

52.5 KB Created: 2020-08-10 04:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f67eaa458f9f060dea1372dcd34fb4a SHA-1: fbb6e1333d0bd0cf5ce25bce056252065033e487 SHA-256: 9626c1ea98d6b85d6b6e4f9d180bf9324d62b3555ef32f84259f801c5160c54a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a redirector service, disguised as a car manual, which is a common social engineering tactic. The ML classifier strongly indicates maliciousness. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm designed to obscure the ultimate destination and potentially spread malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=vauxhall+astra+2020+manual+pdf.

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.
  • 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.
  • 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=vauxhall+astra+2020+manual+pdf
    • http://files.socialmarketinglincs.co.uk/uploads/1/3/2/3/132303082/8baebf58df74a.pdf
    • http://files.diabetesinfogate.com/uploads/1/3/2/6/132695746/lisebedanet.pdf
    • http://files.harkwell-labels.co.uk/uploads/1/3/1/4/131453429/gekikugepegupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/jvc_kd-_s29_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/fawabewudexelurodu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/xajoraloxulovopegeban.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/85758534167.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/ratutat.pdf
    • https://cdn.shopify.com/s/files/1/0432/0129/8589/files/capability_curve_of_alternator.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0799/files/pinobuwosuseju.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/11633790983.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/golisepabegapefeni.pdf
    • https://cdn.shopify.com/s/files/1/0432/8446/3784/files/kujabogimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/41393683715.pdf
    • https://cdn.shopify.com/s/files/1/0437/4760/6679/files/this_egg_glitters_oddly_in_the_light.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000817e.bin
5ac790da447c7e582ada710a464f1e9b630de85097ce3f68e9cb53bbca345154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817E 5196 bytes
font_01_sfnt_off000092ef.bin
597bcf0a59b405abcb4a46c5ba917362bed33738cee417f70636c1c7f96f78f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92EF 10616 bytes
font_02_sfnt_off0000b71b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB71B 4324 bytes

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