Malicious PDF — malware analysis report

Static analysis result for SHA-256 962490e683e58c78…

MALICIOUS

PDF

71.0 KB Created: 2021-02-08 07:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bff66520eaac938e24fa6dfe15ae9b13 SHA-1: dfa265cf703e4eca5cf77fec66608f1cd373eb0e SHA-256: 962490e683e58c784e22e0775fa57dec90d714698bd7e64fc6175d382c85c7dd
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest malicious content, likely a phishing or trojan delivery mechanism. Although no scripts were explicitly extracted, the PDF structure and URI patterns are indicative of malicious redirection.

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 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://jottigo.ru/aws?utm_term=reporter+meaning+in+telugu PDF link annotation
    • http://sodaapp.club/vigazojagujalita0yfs.pdfIn PDF document text
    • http://cabinetshq.xyz/jitoze03v76.pdfIn PDF document text
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/7028962.pdfIn PDF document text
    • http://crispyset.online/97469739030z1glz.pdfIn PDF document text
    • http://difavusimope.iblogger.org/luxenawotopusobuxuzu.pdfIn PDF document text
    • http://instapriz24.site/50354238972zecyp.pdfIn PDF document text
    • http://wavepolabipal.22web.org/kisigabonokel.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
    • http://faxiwig.epizy.com/cerebral_venous_sinus_thrombosis_patient_information.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/56542268703.pdfIn PDF document text
    • http://rapuxatidugek.epizy.com/xavigixavajeruzep.pdfIn PDF document text
    • http://tezebidurob.epizy.com/nice_guidelines_acute_gi_bleed.pdfIn PDF document text
    • http://femasusatatovet.epizy.com/98237669721.pdfIn PDF document text
    • http://larisakexifa.epizy.com/sosewoko.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA15 4848 bytes
SHA-256: 946340a03f98047f97f42187c2d818a494acd4cd5b9c94416d181dd4479669b6
font_01_sfnt_off0000da7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7A 11292 bytes
SHA-256: e359ef734ea2172279b7bede05cb8b515504bef2a2ee26a8a7d8a7023ea3a3f2
font_02_sfnt_off0000ffc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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