Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0d1305102a34dd…

MALICIOUS

PDF

79.4 KB Created: 2021-01-05 21:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3f44e3b96692dd94e51a3736dde37087 SHA-1: ec10c90471660ce8613967ab21cbd8da02c00b57 SHA-256: be0d1305102a34ddeb06e7dc6170be5208e5db99f51443ed0d6e8ef933822781
214 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious websites, as indicated by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure related to software downloads. The presence of numerous external links, including one to a known malicious redirector, strongly suggests a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=seagate+blackarmor+nas+440+software In PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/gagagugidexofona.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/awCigf9/bet9ja_old_mobile_coupon_check._c.pdfIn PDF document text
    • https://xawalovu.weebly.com/uploads/1/3/4/6/134652108/rixut.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/purixifusipelid/mowuwikad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c840192a-e65b-4df1-b44b-bd5625d513bf/9_snf_fizik_kuvvet_ve_ha.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e92714b-e7f3-44be-984e-104b0d6a3695/zawirisadodijokinimub.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/75666084140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad6924f-5500-4b1d-b2b8-af113081a34e/dungeon_hunter_5_mod_apk_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b71011ed-904a-4b23-a85d-3af710095155/algebra_1_weekly_review_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tefelaj/5283689912.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/78516811428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe82711-5cb3-4b20-b505-3b9e14d029af/memokina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e192c1-730b-407b-8c77-a5f85565d8de/nirrti_destiny_child.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73A 5828 bytes
SHA-256: 6642fddb1a5cf22e31d588f61e759b6cf5b65cd4ece5656fd2c3ad64733d1b58
font_01_sfnt_off0000eb12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB12 1648 bytes
SHA-256: 2caeb454a93b18584067451a2b12acb77e4a50455da74f41c574601843ce0219
font_02_sfnt_off0000f356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF356 11128 bytes
SHA-256: 192e90b8f1fd7d9ae6bf26399945f568f61dfd394f88853ebfad4781d4b225a6
font_03_sfnt_off00011853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11853 16312 bytes
SHA-256: 62389b49bc718f63eef7df5901f2572143483da59c3f41c751778f33e893410c

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