Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86abbe61ba4c2c7…

MALICIOUS

PDF

82.7 KB Created: 2021-03-07 19:03:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 60548445bdeec708861802d34884a7bb SHA-1: 6a76c3135382f8cf6d58ea1db7974055af731d67 SHA-256: f86abbe61ba4c2c7a136c6d5250f95ddc67d110440c20a56c320de4516e157bd
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to distribute malicious content or phish for information. The document body, though heavily obfuscated, contains text related to 'civil rights' and 'communist deception', likely a lure to entice users to click on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/wix?keyword=civil+rights+tool+of+communist+deception PDF link annotation
    • https://cdn.sqhk.co/jutusaxibu/gygd1hf/45127566632.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/temuriwetadenaxos.pdfIn PDF document text
    • https://lotojenamiz.weebly.com/uploads/1/3/1/3/131381761/lexumezelegu_jafop_rezutuw.pdfIn PDF document text
    • http://zizaburixakog.iblogger.org/biriyani_movie_songs_free.pdfIn PDF document text
    • http://instahelpforbusiness.com/dual_app_android_94uftj.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/iDhb0ZZ/fexisiwesufizapivapaj.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/how_do_you_adjust_an_invisible_fence_transmitter.pdfIn PDF document text
    • http://podarokinsta.online/lagu_binks_sake_one_piecenti7j.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/48421d683cd607.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/cG5mieC/ddpai_mini2p_review.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/fenumafalumi.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/share_jesus_without_fear.pdfIn PDF document text
    • https://kefuvavubuxega.weebly.com/uploads/1/3/1/1/131164002/9487351.pdfIn PDF document text
    • http://rowaxamapitowej.getenjoyment.net/what_names_start_with_j_in_the_bible.pdfIn PDF document text
    • https://cdn.sqhk.co/denirinodo/a1hj7bg/49733156695.pdfIn PDF document text
    • http://befomibaxizep.iblogger.org/71700202933.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_9638068942854108b2251bccd4c9512e.pdf?index=trueIn PDF document text
    • http://pezamax.myartsonline.com/tixedexotukosiwome.pdfIn PDF document text
    • https://b962d5b8-8819-42e3-9ba3-d95e8366760e.filesusr.com/ugd/f51585_bcb09f44622440fa8d21ed1b83722475.pdf?index=trueIn PDF document text
    • http://jowazojulowidag.epizy.com/68974598308.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_6786ac3d14b14519b75eae7df468fe60.pdf?index=trueIn PDF document text
    • http://zesexabipezu.epizy.com/kukafixogaloguneg.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_off0001072e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072E 5324 bytes
SHA-256: 4b1e56821911d315ea84ee00ce1fc594a18be3d2e0e5fc6e1192a10e96c58a3f
font_01_sfnt_off0001192c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192C 10836 bytes
SHA-256: c64a54776fddc7323445b911e9d2c137bde51c3a4ca6f4b7237e2eb40813e7fe