Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d987e856a9a0f47…

MALICIOUS

PDF

46.9 KB Created: 2020-08-21 11:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f24e56cd8655b40b96021c6945deab4 SHA-1: a708fc128d151ec22126739904c7caf717168c47 SHA-256: 0d987e856a9a0f47a105539559ffcb53c65abd9331a53e1ff3b7b78d3fe1ebf7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '2019 racing games apk' and a URL that appears to be part of a link farm designed to attract traffic. This suggests a phishing or scam attempt, likely using the document as an attachment in a spearphishing campaign.

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.com/pify?keyword=2019+racing+games+apk
    • http://vevugela.legalmadeeasy.net/uploads/1/3/0/7/130776445/raxede_guzopofe_domomubululop.pdf
    • http://files.markalldridge.co.uk/uploads/1/3/0/8/130874526/rikigononef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/wunijiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4976/9367/files/hindustan_times_editorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1160/files/padman_full_movie_hd_1080p_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/vofidufafeviwix.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/10049313531.pdf
    • https://cdn.shopify.com/s/files/1/0437/0877/6600/files/96925014962.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/fewifawepad.pdf
    • https://cdn.shopify.com/s/files/1/0436/3157/5198/files/fajugaporibepebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/34850305171.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078fd.bin
6bfbb8ef483709f0675a2d6a246558a2dd7ade699cc82291ceb511d702519ce2
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 5672 bytes
font_01_sfnt_off00008c30.bin
88f07572bcc875ff0b78a62c51577ac75a17e50cdd60c2d0bb3f9ec20975b02d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C30 10192 bytes