Malicious PDF — malware analysis report

Static analysis result for SHA-256 954ffb4ccefc036f…

MALICIOUS

PDF

76.2 KB Created: 2020-12-26 00:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 648b2fd4369e67aa3ae0c311d810c5d2 SHA-1: 17bc4c3156c589adb8a70b4742fb72c2d0da7ef9 SHA-256: 954ffb4ccefc036fc44adde97243f213f34ef45df10b205edc5e97bea2f43d41
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of embedded links, forming a link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a 'SWOT analysis'. The presence of numerous external links suggests an attempt to redirect users to potentially harmful websites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=swot+analysis+of+any+marketing+company
    • https://bolowarokarov.weebly.com/uploads/1/3/4/3/134349384/3063922.pdf
    • https://cdn.sqhk.co/vixokezafafu/hihijiH/64737738287.pdf
    • https://cdn.sqhk.co/pibegufuxova/EicijhV/fukaxasugunekafejov.pdf
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/4489224.pdf
    • https://kibutudevitage.weebly.com/uploads/1/3/4/4/134499349/zefalitorowot_lowepob_mufiravoruguju.pdf
    • https://cdn.sqhk.co/jajotulix/iRJvghN/28405870323.pdf
    • https://static.s123-cdn-static.com/uploads/4470231/normal_5fe493c274915.pdf
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/pemup.pdf
    • https://cdn.sqhk.co/zifakepavax/jjSgcfv/5887546567.pdf
    • https://cdn.sqhk.co/pibegufuxova/hihiEhe/mother_earth_brew_cali_creamin_creamsicle_vanilla.pdf
    • https://cdn.sqhk.co/zumiredosuwi/hjjdJft/77008236398.pdf
    • https://cdn.sqhk.co/fewukise/UoheYjc/carrera_rc_mario_kart_8_review.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e69c9ef2-5686-4654-bca7-1a305b179501/fresh_mochi_near_me.pdf
    • https://s3.amazonaws.com/zidosozawok/fejelomiforexitofir.pdf
    • https://uploads.strikinglycdn.com/files/a6b10b60-6e32-48f0-8707-48b21808e8c5/sudekigeganewebevewebida.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edcf.bin
409c74ba2a07416abd4435a89269a9486022c474a69d9af08043b8407f845713		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 5696 bytes
font_01_sfnt_off00010148.bin
3d3fafa772cf2c9c0376392ef657d2859ba94c61c5cefdfd1acde014500c8a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10148 10080 bytes

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