Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4dd19db89783724…

MALICIOUS

PDF

75.3 KB Created: 2021-04-01 00:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a62fd7a1b31e66a9ce63d8494a99ad50 SHA-1: f6f73c35e92ffe7b23265c762fa2d0b79d0ecbc0 SHA-256: e4dd19db89783724cc8119795634cf9e02d24c403739ef9e6d153be3d9fa0acd
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it's part of a link farm or phishing campaign designed to redirect users to potentially harmful websites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly support this attack pattern.

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
  • 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.
  • 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/aws?utm_term=1999+polaris+sportsman+500+service+manual+pdf PDF link annotation
    • http://xuwuvewisin.mypressonline.com/quality_and_safety_in_nursing_2nd_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/gj4UO0I/medbridge_sign_in.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5fe81ade7e8b5.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/gi6idC7/toca_life_hospital_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/Q2Vgeha/barber_shop_near_me_black_hair.pdfIn PDF document text
    • https://cdn.sqhk.co/zevijevam/ijf2idA/fixusoxubapabudad.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/cw10phf/96105329830.pdfIn PDF document text
    • https://cdn.sqhk.co/tunidenopu/iSii6Zl/lirugudezekezulezelonaw.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/eD9ji4q/vernon_spelling_test_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mikitikotak/b17lgcZ/pobibanubotajuzipu.pdfIn PDF document text
    • http://farotosinotom.mywebcommunity.org/dojedepopatebuwode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_6037190a7aebe.pdfIn PDF document text
    • https://cdn.sqhk.co/novupezezis/hjfZATg/71261191933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469104/normal_603893675948e.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/3ha5jjh/ravozutokona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_7582f9a7b3684d9893b8b65d63ec9c89.pdf?index=trueIn PDF document text
    • http://famomijis.onlinewebshop.net/cluster_sampling_example.pdfIn PDF document text
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_4428773e0f1b49c998df364d4b55c3f3.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD961 5624 bytes
SHA-256: 52104e34d3520b3b50762426579d71f3e6499a182ad5b33b782c23f2928ac4d8
font_01_sfnt_off0000ec6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 10712 bytes
SHA-256: 19168f47fe5ef833fdc389c73de9db59ace25392b90c2b38d85e8e38f7aaf254
font_02_sfnt_off0001112b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.