Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5b070629b1d8e5…

MALICIOUS

PDF

74.3 KB Created: 2021-02-26 18:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9c3fecce855658250213bebc488d8442 SHA-1: a33e71d82b51761b16df91d9b9035623fe8f0e78 SHA-256: 7d5b070629b1d8e58844e89b8635a347ab19a7de50900181271acdd749b6437b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://vilenefex.ru/wix?keyword=no+contract+internet+providers+near+me PDF link annotation
    • http://fefiwizam.sportsontheweb.net/do_car_seats_have_expiry_date.pdfIn PDF document text
    • https://fejevudud.weebly.com/uploads/1/3/2/6/132695511/6593434.pdfIn PDF document text
    • http://gachihyper.xyz/dyson_dc23_animal_specifications5ecb2.pdfIn PDF document text
    • https://kuwobudub.weebly.com/uploads/1/3/4/5/134587752/warurefifurudi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426974/normal_5fcbd731d7313.pdfIn PDF document text
    • https://jukamonasob.weebly.com/uploads/1/3/0/7/130740128/6e61e.pdfIn PDF document text
    • http://wonder-ita.fun/comparing_fractions_common_denominators_worksheetsv4oag.pdfIn PDF document text
    • https://dubujede.weebly.com/uploads/1/3/4/6/134607356/8377181.pdfIn PDF document text
    • https://noragunefide.weebly.com/uploads/1/3/1/6/131637841/fiwefaver.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472766/normal_5fcc86f3a5350.pdfIn PDF document text
    • https://buvupoxiku.weebly.com/uploads/1/3/4/3/134329971/c0a385ec32ff.pdfIn PDF document text
    • https://mujabimebedegi.weebly.com/uploads/1/3/4/2/134234846/c0dbf1.pdfIn PDF document text
    • http://fartook.online/jitoreraravojodepafuvakh0rf9.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/nibez.pdfIn PDF document text
    • https://gakefutafo.weebly.com/uploads/1/3/0/7/130739004/babazanowisok-tedikilezotorab-nujozaganovofo-tatipawadizabas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66E 5216 bytes
SHA-256: 89e0e552f658bb81d46926dea04408ceb79cd4b8ca535888fbcc8b200e77e255
font_01_sfnt_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 10660 bytes
SHA-256: 586fe6ea57e048cc640b7b2f60858c6ffe22dfabe30dc33b9a500edee0f01b5d