Malicious PDF — malware analysis report

Static analysis result for SHA-256 621d58a733d8b55c…

MALICIOUS

PDF

69.3 KB Created: 2020-12-19 06:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 787c88831ed80bae183dd14707e25fab SHA-1: 2e02ec66f6ff9dd36de1a9b3fc87241522b83295 SHA-256: 621d58a733d8b55cb614ec9e7b2eff921d2f50719d6f3a035b6b7ff4ddf25ebf
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. The document body, though partially garbled, contains text related to 'Rodeo stampede apkpure' and 'wkhtmltopdf', suggesting a lure. No scripts were extracted, but the presence of a malicious URL indicates an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?utm_term=rodeo+stampede+apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481513/normal_5fb8ca10e3f96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369525/normal_5faee1f9ef5ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fc9485e51e25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f906e8e219c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6899cc6d96458364908ac/t/5fc771e8ad3e6411924718cb/1606906345046/casino_card_game_crossword_clue_6_2_3.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/meg_tirrell_cnbc_images.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2fd6b97992eb55c026f/t/5fc1b0b22dd96f59182e5007/1606529204017/92627184810.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/55297691003.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c49217e72026400b6e23/t/5fd193ad0f163860c7a99467/1607570349673/96079848212.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/nijijusuvagedoga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6f0e41969b523a41dae17/t/5fce501883d2ac65cc4387ac/1607356442722/rupej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdf9088a6527414899eb56/t/5fcf1c3524ae147ef3d6a994/1607408694499/xamasuwufetapuxuvojejumep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc042db8787e8798968ae67/t/5fc119117acac6192ae7d602/1606490385606/boat_n_rv_rockwood_tn.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/16659421558.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/mutitazu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc510ce16f6d44b07d95d60/t/5fc5ee701972c46e3c6b39db/1606807153235/fosters_daily_democrat_classifieds.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_off0000d2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A7 5144 bytes
SHA-256: 96ea2020cc929ef9e769e40cd3c92c7f3b6f6fcfe5d8f979565138dc8b753162
font_01_sfnt_off0000e416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE416 10984 bytes
SHA-256: a82b7cbe07c68340f9b81f9b3627921f3c6e3e2b723fb245788c28fb18d340b2

Open this report in the interactive analyzer, or submit your own file for analysis.