Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6df674b2bcb75dd…

MALICIOUS

PDF

41.1 KB Created: 2020-08-06 15:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4057435671ce51de1f908d539396f3b3 SHA-1: dccd303d6ea44585bf5968fe919463b0b68354a5 SHA-256: e6df674b2bcb75dd40cc23674a73eb3be3a863d44398ac79cfbcf50177e1eccf
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 (ttraff.com). This suggests a link farm or phishing lure designed to direct users to malicious content. The document body itself contains garbled text but includes the primary malicious URL, indicating an attempt to disguise the malicious intent. No scripts were extracted from this sample.

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=aprendizaje+significativo+en+matematicas+pdf
    • http://files.bmhspridetime.com/uploads/1/3/2/6/132682640/3378738.pdf
    • http://files.haystackcreations.com/uploads/1/3/0/7/130775131/d247da.pdf
    • http://files.mintconditioncoinringcrafters.com/uploads/1/3/1/8/131857916/708146.pdf
    • http://files.canberranetworkingday.com.au/uploads/1/3/2/7/132740338/3fe83970b82.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74808095599.pdf
    • https://cdn.shopify.com/s/files/1/0448/3085/1233/files/adverbs_of_manner_lesson_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0597/files/tcs_affidavit_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/duruxagodezujapafitafex.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/dovebavisetewibajod.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/97364787481.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8744/files/niniwunavusuxepasixofese.pdf
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/73788619107.pdf
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/63372941849.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/99964870942.pdf
    • https://cdn.shopify.com/s/files/1/0429/1556/1638/files/60682748364.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/rokavajadikibamijojunu.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_off000060c9.bin
b9efb684c9b0483b4973260a85c5a9da8198f16758cb2f3a7dfb5a6d5a5973dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 5620 bytes
font_01_sfnt_off000073ed.bin
a311cd81408fd3ea739465cfbb09cf376ac0b17f4d8780e212396d7e496e28bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73ED 10876 bytes

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