Malicious PDF — malware analysis report

Static analysis result for SHA-256 48dca0822f2668f8…

MALICIOUS

PDF

52.8 KB Created: 2020-08-23 11:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96da0cd70024fe97f972f9408e244337 SHA-1: 39373b643d7793cb9af9491435f50280ec3e0e4b SHA-256: 48dca0822f2668f8aa677f427df5d10bc030b0a37aa95d4e3b104e7df6d5ce46
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=boulevard+hotel+bangkok%2528+formerly+amari%2529'. It also exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The presence of a 'SE_LOLBIN_RUN_COMMAND' heuristic suggests the document may contain instructions or visible command text that could be used to execute malicious scripts or binaries, likely to facilitate the redirection chain. No scripts were extracted from this sample.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.ru/pify?keyword=boulevard+hotel+bangkok%2528+formerly+amari%2529
    • http://zamuzevup.bcox1.com/uploads/1/3/1/8/131871592/mafatobemutam_nalovu_petodaputebeni_rawugatuw.pdf
    • http://files.bct1379.com/uploads/1/3/2/7/132710753/jikarazuduxit-lizoruvali.pdf
    • http://files.bountifulpies.com/uploads/1/3/0/8/130874627/loxodedame.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/56613605264.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/lodefizikitotix.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/15844229066.pdf
    • https://cdn.shopify.com/s/files/1/0429/0917/1879/files/beimaan_piya_tumi_gaan.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/curl_post_example.pdf
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/70280714266.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8789/files/zakorutuxunasipov.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/gujibetaxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/cheat_droid_pro_apk_free_root.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/79229899107.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_off00005349.bin
ec12e4d7b862dd8fa40dba08092c29473f9152af46797dbc3fc2954c3306c8b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5349 5592 bytes
font_01_sfnt_off0000663b.bin
f6a1d019d1cdfcb236f9aec891ee7c74b1abb9dc0656ca3bc5ad92ea7de94d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x663B 12300 bytes
font_02_sfnt_off00008934.bin
f2522195d1340aa13bd64e42d8bc59b2f7cb855dbc20449352e66a55e5bb050e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8934 14416 bytes
font_03_sfnt_off0000b58b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB58B 4324 bytes