Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8044cff6ded0668…

MALICIOUS

PDF

78.0 KB Created: 2021-03-19 05:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2d1d8015e625fab2ad4fb92d2e6f1d7 SHA-1: 204182e2fe3ae228a903c068f6b232202f7699bc SHA-256: d8044cff6ded0668df8109ed05ff50c9817c0492f3c4e47412510c646a4986fc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://midufefew.ru/wix?keyword=english+to+mayan+translator` is the primary indicator of compromise, suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, contains text related to translation, aligning with the URL's apparent purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=english+to+mayan+translator
    • https://cdn.sqhk.co/fegujajox/djfjfHt/kokijaxusatif.pdf
    • https://cdn.sqhk.co/fumazuri/fRPji5V/78662457027.pdf
    • https://cdn.sqhk.co/lediname/YggRONy/nail_art_designs_memorial_day.pdf
    • https://cdn.sqhk.co/kugugofawaz/ajiPBgh/wenigezanalenizek.pdf
    • https://cdn.sqhk.co/bosesegivu/hfhaXTP/disney_hocus_pocus_2_cast.pdf
    • https://cdn.sqhk.co/vavapezami/hCjitgh/zinejomujovatifu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/98cf4c43-ceb0-4739-87f5-0be6c8c4f5b2/what_food_makes_you_put_on_weight.pdf
    • http://wisunabowogus.epizy.com/zikaguwaja.pdf
    • https://uploads.strikinglycdn.com/files/abda2682-da8d-47aa-8666-d723d01bb123/love_poems_and_quotes_for_him.pdf
    • https://uploads.strikinglycdn.com/files/c12d799b-89c5-487f-ac43-770b4cbeabef/the_cast_of_coming_to_america_two.pdf
    • https://s3.amazonaws.com/foneniz/3759688109.pdf
    • https://uploads.strikinglycdn.com/files/fadf53c9-7ef8-4d18-b0cb-f85f8ed6abff/vivug.pdf
    • https://s3.amazonaws.com/zifozujiwi/28698560010.pdf
    • https://uploads.strikinglycdn.com/files/6c93768e-b586-41be-b215-c31ef29253f4/mowonuwedukifutalir.pdf
    • http://taguramol.rf.gd/ccie_ka_full_form.pdf
    • https://s3.amazonaws.com/wuzalugiseto/objective_electrical_electronics_and_communication_engineering.pdf
    • http://lexubaxamomaw.rf.gd/jasozugopaxodiko.pdf
    • https://s3.amazonaws.com/pidufozu/animation_songs_free.pdf
    • https://s3.amazonaws.com/xabalaru/31293052485.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4aa.bin
d1277a6db46157a73697222e7256b83df067c6f31d07831f68a47b0f5d2046d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AA 5160 bytes
font_01_sfnt_off00010616.bin
c79b61e25e2469a743bd648735ac02905d7d5134e6d7842f4c9cb66cb14696b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10616 11168 bytes