Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c32695d97f4bac7…

MALICIOUS

PDF

79.6 KB Created: 2021-03-21 06:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5eb3e921488454b86a37b20ef62bf459 SHA-1: 5b8d43de85bd56b58a889b8453a4b3524322fecc SHA-256: 5c32695d97f4bac7526b35db8d5797a772fcd24dd9c1bbd1ddcd56c2444eb6c6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 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
  • 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://fokemale.ru/wix?keyword=reading+plus+see+reader+hack PDF link annotation
    • https://cdn.sqhk.co/bajowekununa/gijjex6/66664522326.pdfIn PDF document text
    • https://cdn.sqhk.co/xurakipigub/bihgd8s/foxogabagupaxixutavezix.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/koketoxalewonewavo4lbvl.pdfIn PDF document text
    • http://kegetisa.mygamesonline.org/nezabagibaseluj.pdfIn PDF document text
    • https://cdn.sqhk.co/rawatajizefu/hfxjahe/31194692676.pdfIn PDF document text
    • http://lbaranaydin.com/star_trek_discovery_season_3_episode_12_recapai1uy.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/gmgfhjd/fan_the_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bexefoboxevi/IhjibZw/20451618939.pdfIn PDF document text
    • http://raisinshub.pro/70139820635pl5tb.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/Hjjhehf/how_to_play_dice_games_with_3_dice.pdfIn PDF document text
    • http://keep-travel.com/crecimiento_y_bienestar_emocionalg9grr.pdfIn PDF document text
    • http://reweder.site/can_you_find_friends_on_facebook_by_locationphbc2.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/fJibwii/printable_detective_notes_for_clue.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/djj7lgY/vitalsource_bookshelf_ebook_to.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viwuwijagabote.myartsonline.com/mejoxinanobanimoloje.pdfIn PDF document text
    • http://wenares.myartsonline.com/2016_amc_10a_statistics.pdfIn PDF document text
    • http://zasidad.epizy.com/greyskull_lp_reddit_fitness.pdfIn PDF document text
    • http://zowisoburime.rf.gd/calendario_novembre_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44e330a3-7e9e-4d00-ae60-b0f84522b8f0/sel_351_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28fac6e6-b1c7-420c-bd34-a70040b4b081/what_are_the_best_flowers_for_bees_and_butterflies.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_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 5408 bytes
SHA-256: a69f432021b47973f1090bacc9ccf10522b60a4b356f2b7ccfccc83354d652c1
font_01_sfnt_off0001047e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047E 13948 bytes
SHA-256: d0b40ba07ea8f9b43e7b5d4dc8e9c08c748e220aaadebbc9939a2f93681a537c

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