Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0067c51be09e42b…

MALICIOUS

PDF

81.8 KB Created: 2021-03-27 14:04:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2ba2e0cc1dcb8fc67886953e28b6ad6a SHA-1: 551d57aeafbe4b3879ecc88a53e3ce7c79f12184 SHA-256: f0067c51be09e42b88cf0d9ab80e2c4dc405816d182e2e7fe4f98ce7a8632d3d
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or scam purposes. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/123?utm_term=free+natal+chart+full+report PDF link annotation
    • http://electorat.org/sigmund_freud_books_in_teluguog48l.pdfIn PDF document text
    • http://tadidavazutopa.sportsontheweb.net/best_homemade_diet_for_dogs_with_ibd.pdfIn PDF document text
    • https://gamubojuteno.weebly.com/uploads/1/3/5/2/135299935/128fc8.pdfIn PDF document text
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/874d38465.pdfIn PDF document text
    • http://zuvels.xyz/arum_kanathe_arum_ariyathe_lyrics8d5ud.pdfIn PDF document text
    • http://the-job.ru/37215235086211jg.pdfIn PDF document text
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/3c48a6a4.pdfIn PDF document text
    • http://thelandofbadideas.com/90788973739rwp2t.pdfIn PDF document text
    • http://raraveluwogevuw.mypressonline.com/canons_of_taxation_by_adam_smith.pdfIn PDF document text
    • http://italywom.space/horror_monster_simulatorz4zcs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gitojaxekeveki.onlinewebshop.net/20265602737.pdfIn PDF document text
    • https://dc383e6d-b7a3-4e67-a88a-227fa542b6c3.filesusr.com/ugd/72b0e7_0f7447f9c90a4162970836a65b2da50f.pdf?index=trueIn PDF document text
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_28e374edd2984d09ad808331f8a1e594.pdf?index=trueIn PDF document text
    • http://vegubom.atwebpages.com/dreams_from_my_father_bangla.pdfIn PDF document text
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_44367e5d1fbd43bba5db096190bfbfab.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/61bbc9d1-a144-4d01-8524-f82968012211/21209599444.pdfIn PDF document text
    • http://mibexalaxesu.epizy.com/19016657204.pdfIn PDF document text
    • http://gulopajekojof.epizy.com/7002138192.pdfIn PDF document text
    • https://71e5fc8e-cc9a-4633-96c3-2c70acd464d0.filesusr.com/ugd/f08e01_1b6f00b404d242d8843bcb11e7e41a03.pdf?index=trueIn PDF document text
    • https://ef733714-782c-48ea-8991-1bc0bf0c95f2.filesusr.com/ugd/ad2ade_ff4523522a964df98c78b031ca991f3f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a038a3f-8d93-4fe2-a834-d640514120f1/mivadup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e6edde4-0e76-477f-b69a-59a49a393617/black_hawk_down_movie_clips.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10142 4880 bytes
SHA-256: bf62bf0fc3f13006905c91204586c5d6d44d96a794c3bce90717462dba066d71
font_01_sfnt_off000111d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D6 12128 bytes
SHA-256: a96641f69b233fc51a06ede96688c79fc3dce3490514851142a8f77b4bf8bacb