Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb004ee903c2ecc…

MALICIOUS

PDF

69.7 KB Created: 2020-11-14 03:57:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0f8a766c86e3e3d782e0a858dda940ee SHA-1: df2d7cba3c3ef2333601c3103d070b6f007d716c SHA-256: 5bb004ee903c2ecc5f345adb21c8e8612c9530f924914871dccda9fe6e5272be
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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://trafftec.ru/aws?utm_term=baguio+trip+guide+2019 PDF link annotation
    • https://rutaluxunenore.weebly.com/uploads/1/3/0/7/130740368/beponuki.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/880e8c643b0.pdfIn PDF document text
    • https://dokoxinizim.weebly.com/uploads/1/3/4/3/134305801/38373763063f13e.pdfIn PDF document text
    • https://larogarokod.weebly.com/uploads/1/3/4/0/134018293/nufezixisewasip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8a59b3c44b1.pdfIn PDF document text
    • https://rofubedojatedo.weebly.com/uploads/1/3/4/5/134586725/zatorenekototikad.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/1b4e0748.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/novabe.pdfIn PDF document text
    • https://xakexoxos.weebly.com/uploads/1/3/4/3/134307698/kubafunopude.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/nubepopul-vidixakofaw.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5f94c4af1e4b8.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/d1f32af8-fa26-4161-926d-6f745616501a/fox_labs_pepper_spray_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fd7449-c185-43cd-9ec6-f10977f86333/57765089616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a238007-1ce5-4550-a59d-07d0da9babbe/8791669144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c23921-539e-416c-bac0-f6ac7106af22/91689236494.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_off0000d3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A1 5448 bytes
SHA-256: e55e2dcaebb47e143bc756b2903fd37fe71edb15bae615767b53697cd3b9d9c8
font_01_sfnt_off0000e63e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63E 10504 bytes
SHA-256: 9e5e4612d8f85b4f85cddc9fb35965fd20d8a79ae5f35aadf08e156cf03d5e15

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