Malicious PDF — malware analysis report

Static analysis result for SHA-256 93599c61b49aef8d…

MALICIOUS

PDF

34.7 KB Created: 2020-08-22 06:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f55f200cd575b50e841a7d75b86d954 SHA-1: 2bfdaf74c2096649bc127dc856e72dc2a20fd2f6 SHA-256: 93599c61b49aef8d83457a182f8725d93710ac802feb31914a7079770dc562bc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=carplay+adapter+android'. This URL is presented within the document body, disguised as a search result for a popular product, likely to trick users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the redirector URL.

Heuristics 3

  • 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.
  • 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=carplay+adapter+android
    • http://files.horsesinfocus.com/uploads/1/3/0/8/130814245/8289707.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/66364387483.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/calidad_de_vida_segun_la_oms.pdf
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/2554829588.pdf
    • https://cdn.shopify.com/s/files/1/0436/5703/5929/files/jugujepuzurudojebeti.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6110/files/certificat_de_cession_vhicule_modifiable.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/christmas_songs_sinhala.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/74974788433.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1480/files/83965032869.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/biological_product_deviation_report_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/irritable_bowel_syndrome_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/problems_of_budgeting_in_nigeria.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_off00004b0c.bin
58084e0b9b0e98ef40333aab9c340d6e696eade6d1826b69f94014a647ee2ce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0C 4780 bytes
font_01_sfnt_off00005b63.bin
27e34cf16cce8cb61dd2d6ec89299c32c5b7519317679c0b16ee95bbd0663cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B63 10308 bytes

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