Malicious PDF — malware analysis report

Static analysis result for SHA-256 40228c597cc61395…

MALICIOUS

PDF

71.7 KB Created: 2020-08-08 15:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15b279b8fba147eca3bdc96d37a18c68 SHA-1: a6afa14c23895ec9fcdc3b0eb0d4eb24447b6527 SHA-256: 40228c597cc61395424546e136f8b30491c14d9775652321125bb8bc35e776b2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, suggesting an attempt to lure the user to a potentially harmful site. The presence of a large number of external PDF links, many hosted on 'cdn.shopify.com', further indicates a link farm or distribution mechanism. The ML classifier also strongly flagged this PDF as malicious.

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=la+nationalisation+du+canal+de+suez+pdf
    • http://files.stanglphotography.com/uploads/1/3/1/4/131437657/9161632.pdf
    • http://puges.westhavenhoa.com/uploads/1/3/1/6/131606227/zokas_rolefasupis_tajusipu_kujikabab.pdf
    • http://lumizib.trec.space/uploads/1/3/1/3/131383791/bulopogepiboxiwamat.pdf
    • http://rumofi.parkstreetcc.com/uploads/1/3/2/6/132681670/doxanimafanulub.pdf
    • http://files.admgems.com/uploads/1/3/0/9/130969591/zululigigabi-vinixaluxujulo-ziloped-girojedalixode.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/fomufixopuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/92657109886.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/71786132389.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/necron_codex_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/61598425654.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/junevovujivitekaguxepatug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6556/files/borrelia_recurrentis.pdf
    • https://cdn.shopify.com/s/files/1/0445/9554/4228/files/mestrenova_license_file_crack.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/small_business_plan_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/3489/3721/files/25978728108.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_off0000c96d.bin
dac4b63d47d5262206cf820eb725b239db4991447744ba2ca2ce13c7b11d1bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC96D 4924 bytes
font_01_sfnt_off0000da46.bin
27baf65c9fcc2542dbc483f6e93c4784fd63f2c1d50e530150e224ebf9658bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA46 12660 bytes
font_02_sfnt_off0001018d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1018D 4324 bytes

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