Malicious PDF — malware analysis report

Static analysis result for SHA-256 7622c1fe2c3131ae…

MALICIOUS

PDF

76.6 KB Created: 2020-11-25 06:34:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6b30541f55c1a2f9131c760fd9b3cdbf SHA-1: 667628e482af05a39195d1132777978aa803a7b0 SHA-256: 7622c1fe2c3131ae6cd50a01b8100872120ab44380be30f0ffa97e0db1d4fd99
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The PDF contains a mass of external links, including one to 'traffking.ru', suggesting a link farm or redirection scheme. The presence of numerous PDF links, many pointing to Weebly and S3-hosted PDFs, indicates an attempt to create a large network of interconnected content, likely for SEO manipulation or distributing malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/strik?utm_term=percent+composition+formula+compounds PDF link annotation
    • https://gokaraxonupesi.weebly.com/uploads/1/3/4/4/134468062/tulemumake.pdfIn PDF document text
    • https://gigojajalul.weebly.com/uploads/1/3/4/3/134320096/ac1e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_5fb91c7590b05.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/5378404.pdfIn PDF document text
    • https://mekuluvuxagol.weebly.com/uploads/1/3/4/5/134589608/1974416.pdfIn PDF document text
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/wumulemu_lenuwad_nozako.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/pesetufavo/watch_free_venom_2018_123_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2e28ba9-2c05-49bc-8db8-f60d7258cb77/kitoritujigatejodixatufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2889ef5e-ed65-4d19-87ea-99c210ac7a63/noobees_pisodes_complets.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/webster_course_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cd6768-0535-4d83-bec4-2e6f95670743/47509396900.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/ashley_furniture_baystorm_bed_assembly_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/827903250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee97fd7f-ac29-46ff-8498-9925b58c3f23/12396018410.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC76 5300 bytes
SHA-256: ebc62461c0175ab09c2a1bdac1361bcd3e601b1e987f641f2f415403f7619c3b
font_01_sfnt_off0000fe66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE66 11452 bytes
SHA-256: c2d397d4d3bffdd11c7e543f45ce92a6af94045f814d1980afcfad26aaa54554

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