Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faf77e4f02a5918…

MALICIOUS

PDF

41.8 KB Created: 2020-08-24 07:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d965bb853008e8c61a005a2c2fd214d SHA-1: f900fc202ba21ac18d30c0f5980210705de24978 SHA-256: 9faf77e4f02a5918c939e241847ff1237b51ade956f3f98257f4f04d6a8d8333
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=akasam+thana+rekkalatho+full+video+song', is identified as a malicious redirector. The document body also contains this URL and a list of other PDF links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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=akasam+thana+rekkalatho+full+video+song
    • http://tafimez.stmarysriverassociation.com/uploads/1/3/0/7/130738721/powofugog.pdf
    • http://files.dramaoutofthebox.com/uploads/1/3/0/8/130874050/9670563.pdf
    • http://files.livepurebodycare.com/uploads/1/3/1/3/131380847/9315040.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/5364159825.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9309/files/93008447108.pdf
    • https://cdn.shopify.com/s/files/1/0433/5661/8911/files/assembly_language_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/jekexij.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/44315746633.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/26367431717.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/90606679690.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0464/5152/3752/files/house_airway_bill_format.pdf
    • https://cdn.shopify.com/s/files/1/0444/5070/9671/files/scholarly_definition_of_communication.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/93839857272.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdf
    • https://cdn.shopify.com/s/files/1/0443/8743/4662/files/battleships_template_french.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ad9.bin
9473d1826b23e21ade93afee490a2a8dc60ab42fd35049ab2b757388c1d92505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD9 5316 bytes
font_01_sfnt_off00005cc7.bin
c67676165d900af7b8ceaa732b6b53dd22bc55acafe47fb402d4638ca118bfca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 3044 bytes
font_02_sfnt_off000069bc.bin
9e25f3792e1853173805c94359827b344633161f818542c0a77df1f66d5f5e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 9876 bytes
font_03_sfnt_off00008b8d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8D 4324 bytes

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