Malicious PDF — malware analysis report

Static analysis result for SHA-256 43eecb8b86b658e6…

MALICIOUS

PDF

68.3 KB Created: 2021-01-25 21:51:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fafaab92f645f00da4010f2eb95a0d31 SHA-1: 7805f5ded81c2875798cd34499106d3db434be33 SHA-256: 43eecb8b86b658e6848c4e6736245222d1dd220beecc31ec5572bdac208deef2
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains a link to a known malicious redirector, traffking.ru, which is likely used to funnel victims to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'semi formal evening dresses plus size', a common tactic for phishing or scam operations.

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
  • 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.
  • 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://traffking.ru/aws?utm_term=semi+formal+evening+dresses+plus+size In PDF document text
    • http://sadovik.me/85264853061bi6zf.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/basedovamadutidekomokanajq73o0.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/minitoon_car_racing2bwpw.pdfIn PDF document text
    • http://smartcoin.design/refesurepadoxet82o9.pdfIn PDF document text
    • http://interplast.ru/649773476310orya.pdfIn PDF document text
    • http://dressnbuy.com/solabegabebefozgssw1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fokapikow/85543343207.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/ledasiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/lies_deception_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/adda247_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/wanamewidaripox.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/format_sd_card_allocation_unit_size_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/50080291691.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/35306784397.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/pandora_bracelet_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/wejasisajokefu.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/81439105490.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/95240808431.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5C 5572 bytes
SHA-256: b7b52a90d7215e1a4008fac9626cc9b568fbdaa0b5e7e9a7243477261117cc2a
font_01_sfnt_off0000e050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE050 10728 bytes
SHA-256: 28568d21ae0207145827c9f12dd274457ef315bbf55c8bdcb0f7a59b3bf8cba1

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