Malicious PDF — malware analysis report

Static analysis result for SHA-256 f594e6c0a66ca3b1…

MALICIOUS

PDF

53.1 KB Created: 2020-08-09 14:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 457deaba92e514d1f5236a4ca611db92 SHA-1: d36a3d3a09483831e469a577fd6dacce4edd570b SHA-256: f594e6c0a66ca3b16539d1cba19ee7620cddf726025ea23e5c5909951c733060
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains references to the same malicious URL, suggesting an attempt to disguise malicious activity under a seemingly innocuous topic. No scripts were extracted, limiting the analysis of direct execution behavior.

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=thumb+isometric+exercises+pdf
    • http://pepem.laurelgrovesc.com/uploads/1/3/1/6/131606490/2648565.pdf
    • http://files.lynnshuck.com/uploads/1/3/0/9/130969129/3d01f87.pdf
    • http://files.foothillsbiblefellowship.com/uploads/1/3/0/7/130776592/3a061.pdf
    • http://files.kellyhowardglass.com/uploads/1/3/0/7/130740049/b41bb8e8ee.pdf
    • http://files.aandgcleaningdc.com/uploads/1/3/2/7/132740982/7778527.pdf
    • http://files.foothillsbiblefellows
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/xonukuritudutasuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/9972/3678/files/36268699360.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2998/files/9011826414.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/68118907934.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/dakizotem.pdf
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/nibomegujuwadekub.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/lavozen.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/43767528998.pdf
    • https://cdn.shopify.com/s/files/1/0437/6169/6925/files/rovetaxod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/que_es_el_enanismo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0534/files/vejojolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/jusugotuwuzakozemez.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/rusukarulozo.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_off000072f7.bin
d5daa4d4216e4dcaeec41cd3e9c7373b96c1950c056b81089a5b31600759e9ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 5312 bytes
font_01_sfnt_off000084df.bin
d9ce14c61e7f4bf29129c62d7a4a0a600728ee7314bdb2278185e8bc72ee2e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 14064 bytes
font_02_sfnt_off0000b150.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB150 16204 bytes

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