Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba6e20e32b4fa7d…

MALICIOUS

PDF

96.0 KB Created: 2021-02-22 00:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b1fd4573c51c4a4165a710b56105620d SHA-1: c09ba4da6802d4dc559d7c737bb92a292db445f5 SHA-256: fba6e20e32b4fa7da7c2ee918dd74e25491a2f13466e32d040cb75cc37cd1e15
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://maypoin.ru/wix?keyword=four+signs+that+a+chemical+reaction+is+taking+place PDF link annotation
    • https://supogile.weebly.com/uploads/1/3/1/6/131606666/noroba.pdfIn PDF document text
    • http://managerprogram.live/california_proposition_65_list9260z.pdfIn PDF document text
    • http://poradoit2.site/24168642049px9in.pdfIn PDF document text
    • http://spain50off.info/47651794394c575z.pdfIn PDF document text
    • http://dalkomis.website/kapusatolobq71mn.pdfIn PDF document text
    • http://jovaguduretup.22web.org/lamelekokarobiniw.pdfIn PDF document text
    • https://kiwerulokakawe.weebly.com/uploads/1/3/4/5/134509827/2610634.pdfIn PDF document text
    • http://instapodarok.site/89868743512g6xgg.pdfIn PDF document text
    • http://mebets.xyz/fortnite_on_play_store_androidqiafr.pdfIn PDF document text
    • http://virona.org/1075481349962nl9.pdfIn PDF document text
    • https://jenevokitajawol.weebly.com/uploads/1/3/4/2/134235402/2315523.pdfIn PDF document text
    • https://togawikanow.weebly.com/uploads/1/3/5/3/135320583/sujekirusijixib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilapiwet.epizy.com/lotus_notes_10_client.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/77733630465.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/12891519965.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_off00013cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB0 5368 bytes
SHA-256: 44156e8d379e35ca7c44681ed168d295e487ea9893b5021fef7f64a3f0d0a648
font_01_sfnt_off00014ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ECB 10468 bytes
SHA-256: b0077e8e404b1de29a1dbed98d168c16067d542d4263a4ef197db724044a7ed3

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