Malicious PDF — malware analysis report

Static analysis result for SHA-256 995b852c557e6191…

MALICIOUS

PDF

70.1 KB Created: 2020-12-21 04:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c2b0d4421d6498f449c9e16ab668c1ce SHA-1: d07830d6686965ae2f633b3e59f08483178f473f SHA-256: 995b852c557e61914e265d3d9433a75de145583686ca423284dba334101707d7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and ML classifiers indicated a high probability of maliciousness. It contains a large number of external links, with one pointing to 'traffking.ru', suggesting a potential phishing or SEO spam campaign. Although no scripts were directly extracted, the PDF structure and link farm heuristic indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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/aws?utm_term=escape+room+answers+level+104 PDF link annotation
    • https://vaxurubezinijor.weebly.com/uploads/1/3/4/6/134690270/dijozuvida_bukisidaxukezuj_kixazurufej.pdfIn PDF document text
    • https://fojulivopex.weebly.com/uploads/1/3/4/7/134718782/nudanutunalu_febumomedulogo.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://static1.squarespace.com/static/5fce0cb456a976706ec4a1d5/t/5fd6b0e0102ca46975efa32e/1607905504747/94795428644.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/80637995902.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/xumozepipazezuxa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe079d145a8629dc779e7e/1606289310113/tunesilewijotafemaxuxole.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/wisijujerugo.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/93833870913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9665c4-a5db-4c86-939a-0c0acdc2756e/philips_magnavox_universal_remote_control.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d25a7848ba205d3a8ee5/t/5fc88be3217b3604eddf6fbd/1606978531942/dejamavidorobukijunekixi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b620bd14ff0dd2bd8369/t/5fcef7a28b174454e993f040/1607399334419/reading_comprehension_skills_list_high_school.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc804350e6d73f00910ce2/t/5fdd0130264131552532e669/1608319280164/96396403007.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/7th_dragon_2020_english.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3805b3dfdd95b60e588d7/t/5fca080eee6dcf7e3637eede/1607075857267/85899374789.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE28 5132 bytes
SHA-256: 4d78c026b4641dc738effadd7ad5051de0e4df270e9478b918db7c9dd13a142a
font_01_sfnt_off0000cf89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF89 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000d817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD817 10384 bytes
SHA-256: 14c179d5c9744a19470eab3665d2fa891c2c7ed9c05b1a77e3c14ae5954f93c5
font_03_sfnt_off0000fb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB83 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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