Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edc0c380b887cfa…

MALICIOUS

PDF

40.2 KB Created: 2020-11-04 01:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9b317792289768d6e5c740392046203d SHA-1: ef3867050ba4e6bb5aaf7df682c688e2a0795824 SHA-256: 2edc0c380b887cfac27028d9bfaa827448e4ce71d15f2179aa99b9016c2a357f
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to disposable hosting services, forming a link farm. One of these links, https://ggtraff.ru/strik?keyword=jiotv+apk+for+fire+tv, is identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/strik?keyword=jiotv+apk+for+fire+tv In PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/6405507.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/908933d8856.pdfIn PDF document text
    • https://tonurokekar.weebly.com/uploads/1/3/4/4/134456200/1295225.pdfIn PDF document text
    • https://buvusujekigipo.weebly.com/uploads/1/3/4/4/134453925/zolaresek.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/4bbffd9d.pdfIn PDF document text
    • https://neriborotarisim.weebly.com/uploads/1/3/4/3/134345051/livejamaxo.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/d1d971acf78.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/9397168.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/1021114.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/reboribiv-jokarewofesuzit-kuxemopopepug-winajakox.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/xuzutadaxaw_rusorit_pemowod_litokizuv.pdfIn PDF document text
    • 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://s3.amazonaws.com/vifusupegiza/datek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eb3534f-75f7-4a2d-b3ad-eac5ce881785/63833064288.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5358 4480 bytes
SHA-256: 589f73cd6c5ea76842b87cade5160e5691652b85a26c5226e6e94fc6ea6c454c
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 10436 bytes
SHA-256: 5441eb4bcd002f3e580d2e44542497b6899c1156cbd4b46d634401c45e6f4141
font_02_sfnt_off00008654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8654 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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