Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e068cea947951a3…

MALICIOUS

PDF

74.0 KB Created: 2021-01-24 10:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 982c5b34e17464baac4afb48c5982adc SHA-1: eee4283f1187186acdc6dab3b4de1f9c3d665b6d SHA-256: 8e068cea947951a35b5265d42d81a8e0bb6466117dc9576c68ab06d6c0ba010e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one specifically pointing to a URL that appears to be a phishing lure related to bank statements. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or redirection scheme. While no scripts were explicitly extracted, the presence of external links and the phishing-like content strongly suggest an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=bank+statement+in+spanish+slang
    • https://cdn.sqhk.co/todiwapubu/Ghgohe6/23334498310.pdf
    • https://cdn.sqhk.co/dejijadu/FjbjhjO/invaluable_experience_or_valuable_experience.pdf
    • https://cdn.sqhk.co/gorokipo/ihgeEih/gosizibomunezajasevo.pdf
    • https://nefosedinipal.weebly.com/uploads/1/3/4/6/134698739/2d17947f416.pdf
    • https://cdn.sqhk.co/wazafanez/jigf7Iw/38134671015.pdf
    • https://cdn.sqhk.co/ruwonumatag/bFhgoha/tri_color_rolling_ring_with_diamonds.pdf
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/tusaduxu.pdf
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/loririzuxuvobur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/teximikamukubo/atlassian_support_platform.pdf
    • https://s3.amazonaws.com/sitozi/unchained_melody_free_piano_sheet_music.pdf
    • https://s3.amazonaws.com/zamuriza/swan_lake_piano_sheets.pdf
    • https://s3.amazonaws.com/fuwawibu/jaani_dushman_film_ka_song.pdf
    • https://s3.amazonaws.com/bipovoromoj/happy_birthday_piano_easy.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceaf.bin
afbfc756521a1dbeab5413d198d1f7ed084152332f0ea4745ace00428e6520dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAF 5252 bytes
font_01_sfnt_off0000e06e.bin
b89493c279522a186f506f62bd67040a0c10ba742308fd0561e2763920a4d3bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xE06E 11272 bytes
font_02_sfnt_off00010670.bin
bd4ec210b6f0bed3603b49d512cd9a08d3e9d1e81fcf206800274a46106400dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 16068 bytes