Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f44cfb2f7b3027f…

MALICIOUS

PDF

59.7 KB Created: 2020-11-18 17:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 51232b0c4577319930e579c9270950b7 SHA-1: b418399c15dc7f267e561c94cd72eb141521ca6a SHA-256: 1f44cfb2f7b3027f6168585372b04d5e93e4a00f761b0a4886aa0a11d6bc9db5
154 Risk Score

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'. The ML classifier and ClamAV also flagged this file as malicious. The document body, though heavily obfuscated, contains text related to 'Taylormade r7 irons ebay', suggesting a lure to disguise the malicious link. The presence of embedded URLs and the redirector link indicate an attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ggtraff.ru/123?utm_term=taylormade+r7+irons+ebay In PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/1908833.pdfIn PDF document text
    • https://satijezusadevu.weebly.com/uploads/1/3/4/3/134310115/zakipenugekim_diwaf.pdfIn PDF document text
    • https://furobafesenere.weebly.com/uploads/1/3/4/6/134626717/rivexunijivap.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/3511852.pdfIn PDF document text
    • https://sivamodinuna.weebly.com/uploads/1/3/4/7/134762665/titorixibikupapiras.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/57665309-aaa9-4105-89ee-15b60b9a97ad/damar_arklar_indir_bedava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/448d2f15-0ef9-4032-bafb-bac6d4cbea51/denalajowokopefiduv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b5968c0-2ce1-40d5-af45-ae2763da77e7/sixanul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ebf1af-d4b0-4ebc-892d-8c1a4bbd5c97/96134453690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2029a1c5-198f-414d-bb17-4c9b4f1519c4/vepumufafalenuxajeleb.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_off0000ae49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE49 5240 bytes
SHA-256: d2a7ca393a5e0842d38ff6af75788a5baf0b3ef48d1c98fe6291632d6fbc9baf
font_01_sfnt_off0000c00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC00D 10016 bytes
SHA-256: b4c295ed5defc4767a7de8d57b2ee8385ad49e6e4773f943e3ec48efcb04f470