Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab28807890b7048a…

MALICIOUS

PDF

107.1 KB Created: 2021-03-04 09:03:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f23e7ca9cbf25e2f3842ab7db112299b SHA-1: 16b5f4d3e344ba2fd5282524ccebc6576c1d4681 SHA-256: ab28807890b7048a7a7abef27c5c54ce8279809ec3d3f48301a416c840124e7f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The presence of multiple embedded URLs further supports the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://lozipotod.ru/award?keyword=goethe+theory+of+colours+1810
    • http://sipipewawezizuf.getenjoyment.net/81368883398.pdf
    • http://bidizujimon.getenjoyment.net/danby_12_000_btu_window_air_conditioner_costco.pdf
    • http://vazawujuzu.sportsontheweb.net/lafemogidelotafogizib.pdf
    • https://zulevoto.weebly.com/uploads/1/3/2/6/132696122/gireduzapaxalum_wulub.pdf
    • https://static.s123-cdn-static.com/uploads/4378381/normal_5ff48998862e2.pdf
    • https://jifimarug.weebly.com/uploads/1/3/5/3/135319291/mowawaj.pdf
    • http://samettemiz.xyz/48125184938so077.pdf
    • https://static.s123-cdn-static.com/uploads/4387241/normal_5ffcdb936d2b1.pdf
    • https://cdn-cms.f-static.net/uploads/4477167/normal_603d3553aeb76.pdf
    • http://gamukanemafutu.mywebcommunity.org/27792864152.pdf
    • https://cdn-cms.f-static.net/uploads/4383912/normal_6012a39b5eccb.pdf
    • https://cdn-cms.f-static.net/uploads/4375196/normal_60241ad1069d8.pdf
    • http://vowujebotoza.mywebcommunity.org/vileban.pdf
    • http://realwockyc.info/buvoxufifcs82.pdf
    • https://cdn-cms.f-static.net/uploads/4454425/normal_60190aedd81a4.pdf
    • https://gesunewa.weebly.com/uploads/1/3/1/4/131438127/599c66b01042682.pdf
    • http://shopyou.online/sony_vegas_pro_15_bagas31l90d3.pdf
    • https://static.s123-cdn-static.com/uploads/4409799/normal_5fef8002b3e16.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001690a.bin
d391515d3faa54662237a35d44e30365fbd62ccfdd4e904af0eae0509c36442a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1690A 5280 bytes
font_01_sfnt_off00017b15.bin
5c1a0895f041307d56e189a2413315a93a24e05e5488d8fa6cf41fdf6be7079f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B15 10588 bytes

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