Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fbaaa52f828a6e0…

MALICIOUS

PDF

40.0 KB Created: 2020-08-25 00:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95d38e676bd364e35961412bbaeabf18 SHA-1: cabc8f7fc796866af4ce5e0391854703a8579586 SHA-256: 4fbaaa52f828a6e04042b59f066368eea7816f5d4974d301ac160bfe915ba862
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=unicorn+invitation+card+free+template, which is likely used to funnel victims to further malicious content. The document body itself contains text related to invitation cards and the authoring application, suggesting a lure to disguise the malicious intent. The presence of numerous external links, including a link farm, indicates a phishing or redirection campaign.

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.ru/pify?keyword=unicorn+invitation+card+free+template
    • http://files.sierranevadafc.com/uploads/1/3/0/8/130814390/ludozezixewuturefita.pdf
    • http://files.sascrunchtraining.com/uploads/1/3/0/7/130740464/womisur.pdf
    • http://jafizi.andrewhillmusic.com/uploads/1/3/1/4/131407945/numuvololido.pdf
    • http://jegokiben.deadlinecustoms.com/uploads/1/3/2/6/132681579/5102767.pdf
    • http://tutago.stannesbirmingham.com/uploads/1/3/2/6/132681426/voxizutemomuti-kozipegugadajip-xosowelesofo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/77131141214.pdf
    • https://cdn.shopify.com/s/files/1/0434/5934/6599/files/20998018407.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/560503181.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/jogesaleloreroruserazu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/voravuxaseweziximose.pdf
    • https://cdn.shopify.com/s/files/1/0438/5384/0534/files/autobiography_of_a_yogi_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/mobilcom_debitel_kndigung_vorlage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/90067076719.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/98956647159.pdf
    • https://cdn.shopify.com/s/files/1/0432/2961/0141/files/sinusitis_bacteriana_aguda.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/51810594922.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/how_to_darken_text_in.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e69.bin
bda93b1b2ee09e38a0239d9e4cd17aca3e4cd613eadae16b02303b3a578442a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E69 5172 bytes
font_01_sfnt_off00006fe6.bin
06888758b75f3554e9375634a8c08b148dbbb405a901c58d82e99437add30bbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 10204 bytes