Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1700235123e962…

MALICIOUS

PDF

73.0 KB Created: 2020-08-22 04:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fdeac9f5807292f63a2f03e8bcaefdd SHA-1: d20b7bb6013d0837f02408e952e504d9bfca00bf SHA-256: 1e1700235123e9623175752461d3039837fbbb48e4b286a09e8a1b7ceca26de1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a link farm. One critical heuristic indicates a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. The document body, though partially corrupted, contains text related to a Chinese drama and the malicious URL, suggesting a lure to entice users to click on the embedded links. The presence of a link farm and a malicious redirector strongly suggests the intent to drive traffic to potentially harmful sites.

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=chinese+drama+the+eternal+love+2
    • http://files.flchavre.org/uploads/1/3/2/6/132695257/4921148.pdf
    • http://lijizo.teamnaomigetwellnow.ca/uploads/1/3/1/6/131606056/9421856.pdf
    • http://files.northamptonfamilies.com/uploads/1/3/1/6/131636781/860cbd.pdf
    • http://files.carrera6partsonline.com/uploads/1/3/1/3/131378953/bawunaf-rinilojemomiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/the_adventures_of_huckleberry_finn_study_guide_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/87691640323.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/goduzezubu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/76831989884.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/90357355478.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/53472807685.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/c_overload_assignment_operator.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/halo_4_maps.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/wideluparibewoxibeletaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1501/files/67683566930.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_off00006c29.bin
f0e41b779fc0619fa8d2c9b830474255047fb18a227a3a3a4e8c4c8198c18ec7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 36268 bytes
font_01_sfnt_off0000db3c.bin
122f39fad67c05b7ac2238db6ce85bad26db3e27a8da9a692a8e6e890af8bae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3C 5164 bytes
font_02_sfnt_off0000ec98.bin
2eabde3521ba68aa79152778ddf33c6fd3aca623b68f16d9e6eb087d81dc6c39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC98 13376 bytes

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