Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc9d28580e83fff…

MALICIOUS

PDF

44.7 KB Created: 2020-08-30 01:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9057411d5937721a531f4dfce9956d35 SHA-1: 274b856989037b273e62e59452650d1d27631e80 SHA-256: 0bc9d28580e83fffc384ffce7cdb8d801d2a7808bce4c3a7c28c2d568aff40dc
194 Risk Score

Malware Insights

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

The sample is a PDF document that contains a heuristic firing for an advance-fee scam lure, indicating it aims to defraud users. It also contains a critical alert for a malicious redirector link pointing to 'ttraff.com', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to cheat codes and URLs, reinforcing the lure. No scripts were extracted, but the presence of malicious links and the scam lure strongly suggest a phishing or social engineering attack.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=line+play+cheat+codes
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_1410f3e0148a46feb1339822ff8d32aa.pdf
    • https://static.usrfiles.com/ugd/9e41f0_03d6d01b5d8247e58dd4c7b344686be3.pdf
    • https://static.usrfiles.com/ugd/5b9a87_d1f42155b5fc4c0792db51c37d891fee.pdf
    • https://static.usrfiles.com/ugd/cc14e4_531f5a77581240d5870b6745d90d4376.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/retorolevedijine.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8930/files/lanuraluze.pdf
    • https://static.usrfiles.com/ugd/4c1554_f728a43117cd4a6b899456ceb54b6aab.pdf
    • https://static.usrfiles.com/ugd/b65acf_4814d5a116fd4a19b0179ca26e1c066e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e30834b7bebc4605ad908d10f6433425.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af0223be4134b44aeaca6abddd61bdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_12a2c83f2b20499789281d00ed5d31f4.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_off00006355.bin
a06146fc5a744152e334d708a3d91a103a1f69db0d1f056359af41aaf5f5278a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6355 4896 bytes
font_01_sfnt_off000073f1.bin
ccf75444c2b95048970504e64d445deca368c51b10cf1851629c13a1d7af16ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F1 10240 bytes
font_02_sfnt_off000096e9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E9 4324 bytes

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