Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d0182386fd19b8…

MALICIOUS

PDF

76.2 KB Created: 2021-03-15 20:36:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 35834f128fd30b32637e3a686a9e46cc SHA-1: ed07476be3981f167bad43d249addfa39e09cddd SHA-256: 69d0182386fd19b849f4a9666c3057c2d4d04eb1088d37ad506449fc02680994
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, specifically flagged as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The primary malicious URL identified is https://dugedepap.ru/aws?utm_term=do+graphic+designers+make+album+covers, which is likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/aws?utm_term=do+graphic+designers+make+album+covers PDF link annotation
    • https://givodevivunafa.weebly.com/uploads/1/3/1/8/131871579/2f9842978e24e.pdfIn PDF document text
    • https://jedegifopa.weebly.com/uploads/1/3/0/7/130738854/5579894.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/vesisiwaxewi.pdfIn PDF document text
    • http://lidagejelotodu.22web.org/pengertian_agama_hindu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_60358418485af.pdfIn PDF document text
    • https://denupadifujufo.weebly.com/uploads/1/3/0/8/130813478/8878831.pdfIn PDF document text
    • https://sulesebu.weebly.com/uploads/1/3/4/6/134634805/visobojobo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423148/normal_6032aaf12dabb.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/zudugul-penuwako-lalalojeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_7569ee68086248cc90b0cdd38ae2ba8e.pdf?index=trueIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_8a30026e0e6549428946affcaecf69e6.pdf?index=trueIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_7dd8c7437640468f8e79f948f7abe9bd.pdf?index=trueIn PDF document text
    • https://e26976e3-f089-44cc-a2a6-54bcc6cae308.filesusr.com/ugd/0df15e_f8178c4ff54a45558cd89b7fa2e1c981.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dalava/sivufiwadelis.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/301379881.pdfIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_a39cef1f2a854053b73b9b7db717eb9d.pdf?index=trueIn PDF document text
    • http://zenomidesedi.rf.gd/92480693596.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/how_to_deal_with_piriformis_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/4009038963.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_off0000ed04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED04 5748 bytes
SHA-256: ebf348bb2c7c448bba3364bd2a3dc31ead4e3860f2c3b0225eebcfdbce181ccf
font_01_sfnt_off0001006c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 10392 bytes
SHA-256: b81c58a8eb07df06a5dde3202659952ff8ab6766781da440a16f001be5ec75a8

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