Malicious PDF — malware analysis report

Static analysis result for SHA-256 2324fcfe62a17228…

MALICIOUS

PDF

68.8 KB Created: 2021-03-05 16:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 04450579e0817c27c231902f89a0547c SHA-1: 741913d0dd35bb8b9fba68a7a9ec632ee1572a1f SHA-256: 2324fcfe62a17228c93518cb53a55b83f03fe24814615ab191151b4791d3d43c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan delivery mechanism. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection service. The primary purpose appears to be directing users to external sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/strik?utm_term=lg+hbs+1100+manual PDF link annotation
    • https://jigudeganulufis.weebly.com/uploads/1/3/6/0/136054519/tukowanatepaneronit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417145/normal_5ff4fd2f01637.pdfIn PDF document text
    • https://fitabidik.weebly.com/uploads/1/3/0/7/130776693/dejoder.pdfIn PDF document text
    • https://sozizupisez.weebly.com/uploads/1/3/1/8/131872239/peguvasozudajig-pufobonevoko.pdfIn PDF document text
    • https://xifabaruwene.weebly.com/uploads/1/3/0/9/130969291/1841600.pdfIn PDF document text
    • https://kapojisu.weebly.com/uploads/1/3/2/6/132696117/kalejupabavijikofobi.pdfIn PDF document text
    • https://xikubafol.weebly.com/uploads/1/3/4/6/134607040/gilunojax.pdfIn PDF document text
    • https://mojapilujo.weebly.com/uploads/1/3/0/9/130969316/kotalulo.pdfIn PDF document text
    • https://nagejezesalu.weebly.com/uploads/1/3/0/8/130874580/3d31dabf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412151/normal_60069d0dc0983.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/qUahjid/6956763041.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/zUghrhj/33029613972.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/fhdSt9x/crossword_tracker_app.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/fggHgdY/2020_election_odds_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_602662178b258.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487007/normal_60029888ac57e.pdfIn PDF document text
    • http://dommasters.site/what_is_a_tree_trunk_anatomyznc9w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404964/normal_603c17d08575b.pdfIn PDF document text
    • https://bawefuravejegi.weebly.com/uploads/1/3/1/4/131438418/sazanurikux.pdfIn PDF document text
    • https://fegalovawi.weebly.com/uploads/1/3/4/3/134349911/528995.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/6ihliiO/86012547368.pdfIn PDF document text
    • https://vunukufe.weebly.com/uploads/1/3/4/6/134640969/09953edda26.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/5840123.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/7515fa.pdfIn PDF document text
    • https://tiketarutuluvo.weebly.com/uploads/1/3/4/0/134042831/2549327.pdfIn PDF document text
    • http://tcerkovniekupola.space/the_last_song_cast_miley_cyrus_playing_pianot0rlh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AC 5276 bytes
SHA-256: 7e9ebdd73c13899a0e6e24229efdf92786842d56aef4424296bb6eb324f35cfb
font_01_sfnt_off0000e284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 9964 bytes
SHA-256: 577d24e76d0af886a076f8d1677113f43d4e099403bf6904dd4a1f409476c435