Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbfc1db0cee7295…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 15:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 751874c8608443b3d9603ccf0705045e SHA-1: 40195da289dbe564ad5cce16f5947d8822b9775b SHA-256: efbfc1db0cee729599c6f407087759e23b22545211b6530050d32830c25d0d36
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is further reinforced by its presence in the document body and the PDF's structure, which includes a mass external PDF link farm. The primary malicious URL is 'https://ttraff.com/pify?keyword=camera+360+apk+old+version', which likely serves as a gateway to a phishing or malware distribution site.

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.com/pify?keyword=camera+360+apk+old+version
    • http://files.crooksmemorialumc.org/uploads/1/3/0/8/130874676/7936727.pdf
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/37921947271.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0056/files/nusol.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/a_toned_down_stardew_valley.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/area_of_a_circle_formula.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/acacia_auriculiformis_tree_images.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/32197784783.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/wulufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/88083213714.pdf
    • https://cdn.shopify.com/s/files/1/0436/1181/6099/files/31998435985.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/amadeus_script.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/cisco_catalyst_3850-_12s-_s_switch_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/bhagavath_geetha_in_malayalam_free_download.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_off000060d0.bin
5ac157e263d2aba04887f2fa97eaf59a05744d60b3b2e372e59c161c1392f152		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D0 2952 bytes
font_01_sfnt_off00006b5b.bin
5cc27037d055ee5ce26dff6d3263d2b17fd9e448bf899175f5e6f54d11f742de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 5592 bytes
font_02_sfnt_off00007e47.bin
206e9254379bb56eb7a905d552e2c6839bb659f822b8edcc4f425d8adf131794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E47 13460 bytes
font_03_sfnt_off0000a6b6.bin
52510e4d70f3557fee5b5bbf0d3e68e4933a76b26214029a49039486d04c3985		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B6 16224 bytes

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