Malicious PDF — malware analysis report

Static analysis result for SHA-256 166275ecc235a5f2…

MALICIOUS

PDF

78.8 KB Created: 2020-12-28 06:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8cdc277a1897571c9ebbc0641a105bb0 SHA-1: b0a803c3a35dbef05dff6cff86bb0145a4775047 SHA-256: 166275ecc235a5f2a6b5c4e9e4641434a64d28661cadd2ae3ad9209884e39528
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to 'water pollution in marathi pdf' and a high-confidence heuristic indicates it's a phishing attempt using an SEO redirector. The embedded URL, https://trafffi.ru/aws?utm_term=water+pollution+in+marathi+pdf, is the primary indicator of this phishing campaign. No scripts were extracted, but the PDF structure and heuristics strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=water+pollution+in+marathi+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/96bfc7d4-055d-4d15-8112-754b4e03bd5d/najalegixafiwupemox.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/detefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0520f486-a2a1-447c-ae28-c2472779c9e6/36133433485.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/92101139026.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/amazing_flowers_wallpapers.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/wamovamisutajo.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/58442572299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a907238-d7d4-401f-83c1-3f062a2d7664/jujewogibe.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/vivah_movie_hd_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/nojikuwojunemijifowonun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d81d4fa7-51f2-4ccd-9130-8a16f2845f83/links_awakening_fishing_hook_trade.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/lukajomifizirarerij.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/examples_of_concrete_diction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d74bee-06bf-4a42-b159-58e983e339ff/rojititufikiwitamolarijo.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/fire_extinguisher_inspection_report.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA18 4996 bytes
SHA-256: 201c1ddc518cab470b68edbd77ac51963a001f0c8793fa16010ce8797947003e
font_01_sfnt_off0000fae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE8 10728 bytes
SHA-256: 77f45f4cce0ba0d8ac9385072b06c8469203a31ca7c517502f0cc0a9c9add82f
font_02_sfnt_off00011f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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