Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc60216f3df34865…

MALICIOUS

PDF

83.6 KB Created: 2021-01-05 05:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 51819418d04a0095a39076b917595e64 SHA-1: 622c1057d57247d4c1319b206b49210f8db5388f SHA-256: fc60216f3df3486538dfa0f86002867a1afd7221dd528b5953efe693b2ea4ff7
214 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains embedded links, one of which, 'https://traffking.ru/aws?utm_term=singapore+payroll+process+pdf', leads to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to payroll processing, likely intended to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/aws?utm_term=singapore+payroll+process+pdf In PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/fokubipekasem_besenonidediwam_wovisoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465267/normal_5fc05613b5253.pdfIn PDF document text
    • https://wiwamimojuwat.weebly.com/uploads/1/3/0/8/130813692/nujugubako.pdfIn PDF document text
    • https://nanotobu.weebly.com/uploads/1/3/4/6/134638189/9093853.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/c1eeffa4.pdfIn PDF document text
    • https://sofowalomutupal.weebly.com/uploads/1/3/4/3/134310420/dixukaditaxanedamoku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bokexizometun/how_to_check_duplicates_in_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/afrikaans_full_movies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/2032625811.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/34483046202.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/78707743254.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/sajiwanetanemifoza.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/my_cbse_guide_class_6.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/36586578039.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD68 5236 bytes
SHA-256: b8c2fefdd7a11798df18f8b0af77d8670c554e304726c9d83a66b9e1d9da746c
font_01_sfnt_off00010f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F34 10552 bytes
SHA-256: 5d2420f0fef1cfafef69e4424c91cad05e9cee54b9de58d5cdbfd17931ae30c0
font_02_sfnt_off0001334a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1334A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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