Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab5d834b8d2054b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 21:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb264552d68c6fb9dab301bf3e4949cc SHA-1: 9bda97df90aaf5745a8b52733d5c6cd3d228f8fc SHA-256: dab5d834b8d2054b3b61b8046fad271775c940fbc191df89f33ae4ac91c940d6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. A critical heuristic identified these links pointing to a redirector service, specifically 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body contains text related to 'mobogenie apps and games' and also includes the redirector URL, suggesting a lure to download potentially unwanted or malicious applications. No scripts were extracted from this sample.

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=mobogenie+apps+and+games
    • http://files.triplecanyoncatahoulas.com/uploads/1/3/1/4/131438265/nugebapero-peleperexaguk.pdf
    • http://files.themoveablechurch.org/uploads/1/3/0/8/130874128/9175303.pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • http://ravup.highgradeglobal.com/uploads/1/3/0/8/130874493/nonixivep.pdf
    • https://cdn.shopify.com/s/files/1/0447/0643/1130/files/ballistic_training.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/satovoxuxuzig.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/set_theory_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gibowutobarifokegibig.pdf
    • https://cdn.shopify.com/s/files/1/0447/9533/0717/files/statistics_david_freedman_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/xowegexo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/vufijusapikapipeliwijo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/schaum_s_integral_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/39752047211.pdf
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/nulazupazibase.pdf
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/36981815921.pdf
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/55371821.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/80428985645.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006430.bin
b508c6a688ce93f4dcf5e78f9513d99b545c84ceb20b85aeae2dda27ad6e4cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6430 5296 bytes
font_01_sfnt_off00007620.bin
ffb9bedff9b345fd686fdc462e0d142c3d8905b530420b6a2279d981d0ba862e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 10300 bytes

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