Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0fac191095ab200…

MALICIOUS

PDF

74.9 KB Created: 2020-12-24 14:15:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9783f2a9432e46d8f7589e8546c42635 SHA-1: ebc328bbf8c31a075e0a91cce766c9c39aac2f16 SHA-256: a0fac191095ab200c958794640df4d6fa5634cc6e0bab96824005d1cbbb2c163
222 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a link farm and a redirector to malicious infrastructure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=wb+anganwadi+form+fill+up+2019 In PDF document text
    • https://kusugano.weebly.com/uploads/1/3/4/7/134740680/62f1d523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492259/normal_5fc317c9130e8.pdfIn PDF document text
    • https://munerotilaxamo.weebly.com/uploads/1/3/4/4/134476206/pigokekufozefi-fifodit.pdfIn PDF document text
    • https://zixojubagever.weebly.com/uploads/1/3/4/6/134613499/833048.pdfIn PDF document text
    • https://jaxipalat.weebly.com/uploads/1/3/4/7/134746428/wumuguwunegaxa-zuninemedeji-monupamupixi-dudafuwobokex.pdfIn PDF document text
    • https://delutezebojuk.weebly.com/uploads/1/3/4/3/134353455/8660259.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/thiHhfJ/blast_it_2_space_shooter_construct.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/XnXXjeR/rufofolorenawalatogoxa.pdfIn PDF document text
    • https://pagowabelada.weebly.com/uploads/1/3/0/8/130874520/5003993.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/nowonovege/cardinals_injury_report_mlb.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/canon_eos_rebel_t6_manual_shutter_speed.pdfIn PDF document text
    • https://s3.amazonaws.com/xedobox/ghostbusters_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/article_35a_of_indian_constitution.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/classic_wow_boomkin_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/a_practical_english_grammar_exercises_1_and_2.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/4880597134.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_off0000e5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DC 5912 bytes
SHA-256: 842fe8b46aacb5534cb0ed29ba72523aa8d044b567f2aa2ddbbfa4f41d8da3e8
font_01_sfnt_off0000fa06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA06 10728 bytes
SHA-256: 2e5602b5b03e0963b4aab557b7b2e4ecab75a6fe6d5ff61092cd7b534d89dac5

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