Malicious PDF — malware analysis report

Static analysis result for SHA-256 93fba6a6847d76ff…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 06:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abff11b051784dfda98779372fcdefb7 SHA-1: 7a2fd1ee2c03ebf861a4646632f01cb98a64488b SHA-256: 93fba6a6847d76ffd65685bd504a1a9ec63864b9ee7c04ae3f5b55a6f9eda48f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links directs to a known malicious redirector infrastructure at 'ttraff.com', which is used to lure users with keywords like 'telecharger logiciel antivirus gratuit android'. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains the malicious URL, suggesting a social engineering attempt to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=telecharger+logiciel+antivirus+gratuit+android
    • http://xopafuzo.yeovilconcertband.com/uploads/1/3/1/6/131607163/lelipun.pdf
    • http://files.wildaboutchristmas.com/uploads/1/3/2/6/132695633/linetowanidudawazeko.pdf
    • http://gopatil.thewoodchips.org/uploads/1/3/2/6/132681513/8493694.pdf
    • http://jovofut.debbylovell.com/uploads/1/3/0/8/130874359/444271692.pdf
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/mejuzi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1064/4377/files/ascending_and_descending_order_worksheets_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/miwagupisemanaxefeme.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/muforamuna.pdf
    • https://cdn.shopify.com/s/files/1/0437/6503/9261/files/gaboviv.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/biomes_of_north_america_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/rexagitewifinap.pdf
    • https://cdn.shopify.com/s/files/1/0440/1109/4174/files/25100770276.pdf
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/40732420821.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2707/files/33136523065.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7479/files/algoritmo_genetico_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/99958611413.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/dowinol.pdf
    • https://cdn.shopify.com/s/files/1/0436/1001/3853/files/online_marksheet_aktu.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_off000063a9.bin
026ef13eef56467b14567786286952e1388abe626d6ed495139190db80560db1
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A9 5208 bytes
font_01_sfnt_off0000755a.bin
f0404394d1059ad4f61423e8a7f3456591ba0a963ebea01ceada81028bc8c254
pdf-font-stream PDF embedded font (sfnt) at offset 0x755A 11844 bytes