Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df0f70c941e154c…

MALICIOUS

PDF

55.6 KB Created: 2020-08-18 20:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56ed6cea1188c31efdd0513b8b90134b SHA-1: 984a5a8f755980f411f34294cb02649094d61a19 SHA-256: 4df0f70c941e154c349acfe09f0e0d04912e729eb3188d7c23d63012031ccf36
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The embedded URL in the document body also resolves to the same malicious redirector. These factors strongly suggest the document's purpose is to redirect users to malicious content.

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=vikings+orientation+capping+pdf
    • http://files.childrensbenefitconcert.org/uploads/1/3/2/7/132740580/57d4023.pdf
    • http://files.aastudioindy.com/uploads/1/3/1/4/131437552/f4001.pdf
    • http://files.tempestuous.ca/uploads/1/3/1/1/131164476/febijuxut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/filupanigikokoxod.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/32829868368.pdf
    • https://cdn.shopify.com/s/files/1/0440/8449/4488/files/dragonfable_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/eftps_payment_worksheet_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7224/files/wagegagufor.pdf
    • https://cdn.shopify.com/s/files/1/0429/8830/6586/files/93999436188.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/biology_notes_11th.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/brute_force_clash_of_clans.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0435/4362/5880/files/bengali_calendar_1424_with_english_date.pdf
    • https://cdn.shopify.com/s/files/1/0438/1969/6290/files/49716141067.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/american_pageant_16th_edition.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_off00007771.bin
8bb133a1a20f1f3f5d228d56d8463bb601fec5cdbff00b983cb645657660feb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 5320 bytes
font_01_sfnt_off00008992.bin
4539fe14ee9e8102a0bf4ac77e8418b09d94acd2517c8838a954031695901d65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8992 3512 bytes
font_02_sfnt_off00009676.bin
02ea9a0cf29000351ec6e74c05de43bbf225af4470cc4053187866826c527862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9676 10456 bytes
font_03_sfnt_off0000ba87.bin
15de146f73439bc4cdddfcaca23bab0ddd8fc92192a2dacb435ea3cc9ab57fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA87 16336 bytes

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