Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22d58e57ba16500…

MALICIOUS

PDF

68.9 KB Created: 2020-12-06 06:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 166a01f4ce4bf6bb5ba6201a3611a54a SHA-1: 09b45a17a7edb1673c88f9b1197f15e1089fcc18 SHA-256: d22d58e57ba16500731e660bf10a987e5939396b8a35b15ccc57fe0d229f34e5
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to reference 'Hp pavilion g62 service manual', suggesting a lure to trick users into clicking malicious links. The presence of numerous PDF links and a critical heuristic firing for malicious redirector links strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffmen.ru/123?utm_term=hp+pavilion+g62+service+manual In PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/kaxirazemojaj.pdfIn PDF document text
    • https://pitiwiju.weebly.com/uploads/1/3/4/6/134687602/5012f4b3f45.pdfIn PDF document text
    • https://wunabigoji.weebly.com/uploads/1/3/4/8/134891590/9022428.pdfIn PDF document text
    • https://ligexomapaku.weebly.com/uploads/1/3/4/3/134321337/6855904.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/binugoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fa52bc95e266.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/6b887bb6-04f7-4b9e-bd70-37ab5b81177b/rozazagixulepogejokasibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/404919dd-8191-4a42-b5e8-bf8d50636b6a/81552647666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d86c4a7-eb01-4cc1-a5f0-4688c1957892/becca_fitzpatrick_silence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de14b665-3c8e-4fb1-9426-5b973e13df45/bejeweled_3_game_pogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf79ff89-09bd-4d53-bda7-26c69e65ed5d/25134193531.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_off0000cf3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF3C 5560 bytes
SHA-256: edc146e54046c1f347acf5a677bae79a73467d763683796b8e6cde2f4c3fedc2
font_01_sfnt_off0000e221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE221 10716 bytes
SHA-256: 8825820abe3eca09d0ec1ef87860e9cfb55cb66f7e8ef6bb2ddb40cefa5afe1c

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