Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2dab8fb0c34c8b1…

MALICIOUS

PDF

43.0 KB Created: 2020-08-29 22:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39ead3b607621230b0e4aa1c30ac7dab SHA-1: e4f5f0a638066dbe1fbe660653a0270a43c198ca SHA-256: f2dab8fb0c34c8b115a60fe6ecbf9558199254f05b2de84d2d8b183530a8ad77
152 Risk Score

Malware Insights

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

This PDF document contains a mass external link farm, with a primary malicious redirector URL disguised as a download for 'Counter Strike 1.6 t k e dil paketi 1.0 indir'. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL is ttraff.com, which redirects to a page related to the game download. Numerous other benign Shopify links are present, likely to obscure the malicious intent.

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/wix?keyword=counter+strike+1.6+t%25C3%25BCrk%25C3%25A7e+dil+paketi+1.0+indir
    • https://cdn.shopify.com/s/files/1/0430/2441/6931/files/xiroxudoporetijutobegepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/gixivepoxedodaxiguwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/bmtc_bus_pass_form_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8308/files/nolire.pdf
    • https://cdn.shopify.com/s/files/1/0435/7718/0328/files/xurive.pdf
    • https://cdn.shopify.com/s/files/1/0432/6231/2616/files/monti_bristle_blaster.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0461/7542/0579/files/jedekedutopefewexiwexo.pdf
    • https://static.usrfiles.com/ugd/d17951_976bbf27d2b84a978071aa076711cc0a.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc25af426ad04839a74d89c065067bb3.pdf
    • https://static.usrfiles.com/ugd/b8c837_1aed5547cec8470bb834ad8deeacf55a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c18c34ad10884e728dd5f90b0d3ff43b.pdf
    • https://static.usrfiles.com/ugd/b8c837_73af068e6b1c4270ac32a181dcdf4175.pdf
    • https://static.usrfiles.com/ugd/b8c837_06f4b874ea354103be66a26c2c57c641.pdf
    • https://static.usrfiles.com/ugd/3fc21f_6c9998a357aa45c9a07388486318e8b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_da61417200a94ceba3db15df1b75b394.pdf
    • https://static.usrfiles.com/ugd/76de1a_6e690363950a43b391a4943ed802f434.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_off00005b3f.bin
2ae45dc0c68c677aa6284174a48e7f8c30bfd8fa484f104139b637c1c30759b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3F 5604 bytes
font_01_sfnt_off00006e21.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E21 1800 bytes
font_02_sfnt_off000076ae.bin
5a76a352bd51abbe895c19f8b350f6c655ae4352df92f1deac5233b40227775a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AE 11812 bytes

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