Malicious PDF — malware analysis report

Static analysis result for SHA-256 71678b265d6fd529…

MALICIOUS

PDF

43.0 KB Created: 2020-09-13 06:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ee2ed77f799e67f44180ef44c9416fc SHA-1: e50a426d0e1d5819a34bffda917781ee5a45e51c SHA-256: 71678b265d6fd529edf040732534ad82f41ac2f084706597f1b259065ed31676
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a prominent link disguised as a download for 'Call of Duty Black Ops Zombies', which redirects to a malicious URL. This indicates a social engineering tactic to trick users into downloading potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=call+of+duty+black+ops+zombies+apk+free+download+ios
    • http://files.certaintysales.com/uploads/1/3/1/3/131381078/gajudewajojobor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/trifluoroacetic_acid_msds.pdf
    • https://cdn.shopify.com/s/files/1/0443/6351/4012/files/echo_registration_failure.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/64000012642.pdf
    • https://static.usrfiles.com/ugd/ac72e0_54acb8ec6d7f445681e64c106f738789.pdf
    • https://static.usrfiles.com/ugd/b80405_64c176cb825549d2955393bb139a981a.pdf
    • https://static.usrfiles.com/ugd/5cd33b_a256487f68004900a333dd49c21a02af.pdf
    • https://static.usrfiles.com/ugd/868401_1ab3741a4f14495591d1086ad3135afe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b5f.bin
27b748ee931503da7bbd748c21e6b962001e2b36dc9ea055ea975387d771fc72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5F 3212 bytes
font_01_sfnt_off000066de.bin
547f1bf19cdf9662873df3520f0796a960c58fe14771f18f898cc09ff528fd01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DE 5652 bytes
font_02_sfnt_off00007a20.bin
39550baf30e57b65364a5845661dcd35f323976dcfe4f9db228141792b38201e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 10828 bytes

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