Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d14957e1f9dc98…

MALICIOUS

PDF

71.9 KB Created: 2021-02-21 14:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3129585a6d1e7b44a72c501fa9a865f3 SHA-1: db3252d4de2db6ddc9e1477b7fedf06e1c7e042a SHA-256: 46d14957e1f9dc980724638f53cb4ce9128e5cfb7124ece78cec4ce6316ac5f6
104 Risk Score

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI and embedded URLs, combined with urgency-related language in the document body, suggests a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common attack pattern for delivering malicious content.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/wix?keyword=2020+nec+code+changes
    • https://cdn.sqhk.co/lipebefaje/gD1cqjd/68846375493.pdf
    • http://ekzo-fruit.ru/285695633395ho3o.pdf
    • https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/c62a0773c6.pdf
    • http://helplnstagramcontact6088756.com/doctor_sleep_free_downloaduo97j.pdf
    • https://mixusabap.weebly.com/uploads/1/3/4/0/134096097/80017adcc9144.pdf
    • https://cdn-cms.f-static.net/uploads/4382209/normal_601f273f55c31.pdf
    • http://m-ryanaf.site/20199ceks.pdf
    • http://life50it.pro/guidelines_for_food_stamps_ohioowivc.pdf
    • http://cozyplacefor.rest/bibonosibamirabuturugouvnp7.pdf
    • https://riwurarelix.weebly.com/uploads/1/3/4/4/134484082/sisozogezovoviwa.pdf
    • http://tehnotop.space/hamlet_1996_full_movie_kenneth_branaght6g9r.pdf
    • https://cdn.sqhk.co/zanotunuzi/LptbjfN/face_mask_detection_using_cnn_github.pdf
    • https://cdn.sqhk.co/xobabowiwa/evPjejb/bubble_pop_origin_rules.pdf
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5fc9b5857ad87.pdf
    • http://gtomishebs.xyz/pezuvebelifarasosqw2bn.pdf
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/woromarozupipu-moxemililajiwar.pdf
    • https://cdn.sqhk.co/daborofus/kephjgd/mesematazunuluxakedadip.pdf
    • https://cdn-cms.f-static.net/uploads/4454055/normal_6031f1778f919.pdf
    • https://cdn.sqhk.co/riwaxagi/igdhdk7/35385005291.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000dcac.bin
e0db3bfa1be89b1f5d128e057adb3b07001c5c17cd6d6059787ff0e3f203c4c3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAC 5252 bytes
font_01_sfnt_off0000ee82.bin
4d71c87ae9cccdf9821163e94fd00ae29c17dd68519dfad4b78ef556e447747e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 10672 bytes