Malicious PDF — malware analysis report

Static analysis result for SHA-256 5376e417874fd4f0…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 02:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5c6b0b5b593feb7a375b2f3ce263a02d SHA-1: ff72e8b3ece6b8b23c09a37d0e028a3c97a62fc9 SHA-256: 5376e417874fd4f01e124476ac443b588df6c8c95450dfd11331d380f03fe4ed
196 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wix?keyword=download+itube+apk+ios PDF link annotation
    • https://ruxunomitebapat.weebly.com/uploads/1/3/1/6/131606858/nunololavu.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hhDQULS/game_box_plus_400.pdfIn PDF document text
    • https://wusatotaluvak.weebly.com/uploads/1/3/4/4/134469206/c13659a.pdfIn PDF document text
    • https://dezamemev.weebly.com/uploads/1/3/4/7/134746632/d9dac1af3da60.pdfIn PDF document text
    • https://neredijavapud.weebly.com/uploads/1/3/1/4/131409024/a373c.pdfIn PDF document text
    • https://temozune.weebly.com/uploads/1/3/0/7/130738928/8927380.pdfIn PDF document text
    • https://cdn.sqhk.co/lupekute/riahbhc/47823499786.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/6365210.pdfIn PDF document text
    • https://cdn.sqhk.co/vidikusupegu/5jccRja/san_andreas_flying_bird_3d_model.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jaloto/sezijovenijazefaga.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/jusenuvopu.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/final_fantasy_xiv_races_guide.pdfIn PDF document text
    • http://laxaguwen.epizy.com/kelewosisewajusu.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/battletech_2018_beginners_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/automatismo_cardiaco_definicion.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_off0000deb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 5152 bytes
SHA-256: fa6c7af1e6e00a6281722df452cb90eac09e9a748a6f397e84895550e7328e0f
font_01_sfnt_off0000f067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF067 10056 bytes
SHA-256: c329cdf1bf4f3b9e222e741fc1003d12521a9f278f6581a29649f98c9d2a03fc