Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2d618ed674c56b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-07 16:02:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4c42f172536cdfcc25f5ba53d7f3942c SHA-1: 2918ec7ee476c096505dabbb5d9734655138fa89 SHA-256: fe2d618ed674c56bfa92f4343b8075c0aeecc545c18da3946a47ddc08189e500
184 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure, likely intended to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://dafemum.ru/award?keyword=are+hearing+aid+domes+made+of+latex In PDF document text
    • http://powajaxib.medianewsonline.com/fepuni.pdfIn PDF document text
    • http://remontlegko.info/bapiribowure4b0mb.pdfIn PDF document text
    • http://picsonair.com/wafubudodosarut7txfl.pdfIn PDF document text
    • http://tifusavegapawuf.mygamesonline.org/duxanejekusirevab.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/27355848367.pdfIn PDF document text
    • http://texifudosino.mygamesonline.org/yamaha_rx-v863_specs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410965/normal_600024c83985f.pdfIn PDF document text
    • http://girlsbeach.space/60569936389mcbnf.pdfIn PDF document text
    • http://stassikorskyi.com/ingersoll_rand_roller_parts_manualn92d9.pdfIn PDF document text
    • http://fitokaps.xyz/84995696741wsywk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fd3b73bb61a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_0939d4e0d9b242afbe0769cf3cbbb165.pdf?index=trueIn PDF document text
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_84f313a68daf48aeb712a19a36b35130.pdf?index=trueIn PDF document text
    • https://6d23287f-a15b-43b7-8d69-700c0e01f504.filesusr.com/ugd/185c00_0cda0424af654321a28501a09817d939.pdf?index=trueIn PDF document text
    • https://a5a8f6e1-24ae-425c-880d-6f4079e3c376.filesusr.com/ugd/035627_55332dcc41ec4bf6ae54835981698d5c.pdf?index=trueIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_c458c671dc524fb98fbbf46f97e2c16f.pdf?index=trueIn PDF document text
    • http://kofepiropi.onlinewebshop.net/10_nautical_knots_to_mph.pdfIn PDF document text
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_4bf4a2a7b4fa4ff3b64dbd8f5407754d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/3305511839.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_780d983ee4eb4f6a86cbc24b1e5bb135.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetituri/xafinakidoxijaxuxokoguta.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/globo_reporter_horario.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_off0000e713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE713 5380 bytes
SHA-256: 069e5018096367aa964c4e19cace13890d19eaa7365b2eb2eca202acd3575801
font_01_sfnt_off0000f939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF939 10380 bytes
SHA-256: 9508caf1cbcd446ee9d37504146ca13f07ffa76c18c9c9bf79d1f158f2d4e83a