Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc3a173a255559f…

MALICIOUS

PDF

49.1 KB Created: 2020-08-19 12:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9661a2e6eeda1425403fd6c96138602 SHA-1: b797fa8383630fe37a6eebf2447a33839681266c SHA-256: 1cc3a173a255559f289b2c97ba478e29d7d794e5e2f0171354d37a593eb4aae5
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=absolutely+anything+tamil+dubbed+full+movie', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the movie title and the malicious URL, suggesting a lure to download content that ultimately leads to malicious infrastructure.

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=absolutely+anything+tamil+dubbed+full+movie
    • http://files.pterodactylaerospace.com/uploads/1/3/1/4/131454238/zabotasazonelapifeje.pdf
    • http://files.alacolorado.com/uploads/1/3/1/4/131453221/6e8bbd8.pdf
    • http://files.mudgeeyogacentre.com/uploads/1/3/1/4/131452826/darejozamorino_supikusiwe_purisagejap_ximeronemoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/7622925882.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/84043802630.pdf
    • https://cdn.shopify.com/s/files/1/0437/2270/2999/files/58715275588.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0433/7460/8545/files/mortal_kombat_x_cheats_ios.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4314/files/funubevanixurefikugabud.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/kopisono.pdf
    • https://cdn.shopify.com/s/files/1/0438/9063/9016/files/sam_smith_in_the_lonely_hour_zip.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/48146634659.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2501/files/cornelius_castoriadis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8418/files/jitawizerisaxafaveg.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_off000069da.bin
4c924662a20ac4e11a720c2825673b08fb52d7a6c1f2f5d748fc267cea4b5942		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69DA 5516 bytes
font_01_sfnt_off00007c7f.bin
dbc2fe1f42a31a9f59ebc3cf836b8b1a6ae94273391a5ab56751bc3a27b47e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7F 11048 bytes
font_02_sfnt_off0000a25b.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA25B 16092 bytes

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