Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ff040ca250382e…

MALICIOUS

PDF

51.4 KB Created: 2020-11-09 15:41:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 258b12db3fc1c697b03ac0ec4a490cde SHA-1: b873e9588806e04913cc27bfcb2c60ee3b2aba1f SHA-256: 45ff040ca250382eb35a686902a92dcbf6b50407d59effe4641e070ea678a4a4
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/123?keyword=aladdin+full+movie+2019+free+online+1080p PDF link annotation
    • https://fifevogu.weebly.com/uploads/1/3/4/6/134602809/batosiga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5f8a6c52baf55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5fa4b240a451b.pdfIn PDF document text
    • https://muwubuzegutan.weebly.com/uploads/1/3/4/6/134649477/wexodododem.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/poveber_vimurumizu_laxufewipexi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375093/normal_5f9126fb43fa6.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/9484612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5f8dd197c10b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f9c8f90990f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dbb5676-3d84-4501-81d3-55ea7af11744/memotin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a76f5ddd-cf7a-44d8-9022-d1891f0eed2b/soft_maple_tree_bark.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/teguduri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fb5c13-2278-48b3-a960-e281735a4476/90830989306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8e85245-f270-4ff7-bf54-a33e1773e793/nimotuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbd7712-2368-4957-93c1-36d21072c861/jokise.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_off000087a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A3 5732 bytes
SHA-256: 49b273e2edfe7177e6de37b4bde3053a7368d1d371adc8b4536b0a457ba28e42
font_01_sfnt_off00009b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B20 11108 bytes
SHA-256: a2b62e0958201865e161ddf0a5ab69b48b867397b9956be426e728cf692342a6