Malicious PDF — malware analysis report

Static analysis result for SHA-256 8620ea1a6bb9c32e…

MALICIOUS

PDF

69.2 KB Created: 2021-02-28 17:19:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3cfa2f34885cca90e78860df773ae3de SHA-1: c881c29c9e3ceacd0aeaca4ad50a6b80a9be83cb SHA-256: 8620ea1a6bb9c32e37060ebdebad59bb514448579d577169b66784ffb8e0bcce
196 Risk Score

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/award?keyword=plt+legend+manual+dansk PDF link annotation
    • http://skidki-day.site/drinkwell_platinum_pumpi27ir.pdfIn PDF document text
    • https://tisalupiruj.weebly.com/uploads/1/3/4/0/134018152/47b985855.pdfIn PDF document text
    • https://vodefuba.weebly.com/uploads/1/3/4/6/134688083/tuneponozelipuj.pdfIn PDF document text
    • http://alcexpress1.xyz/romozobeboxk5uqp.pdfIn PDF document text
    • https://wowemaba.weebly.com/uploads/1/3/1/3/131380083/zudanuliramonan_fefexep_nonekusuzozaf.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/ie4CieM/fulojejumojinunizuruja.pdfIn PDF document text
    • https://jalizirut.weebly.com/uploads/1/3/5/3/135308553/xivesa.pdfIn PDF document text
    • https://mefupawex.weebly.com/uploads/1/3/4/3/134317460/sigeziwam.pdfIn PDF document text
    • https://litiwufedoza.weebly.com/uploads/1/3/0/7/130739575/4e25dddda01dc8.pdfIn PDF document text
    • http://construt.site/anxious_for_nothing_max_lucado_free6u7rx.pdfIn PDF document text
    • http://slimerecipe.org/japanese_and_european_feudalism_worksheet_answersp5ot1.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/gijjqI9/online_shopping_uk_food.pdfIn PDF document text
    • http://lianhua.life/ccleaner_pro_apk_terbaruoc8nr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kakef/blizzard_overwatch_size.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/honeywell_humidifier_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/gokixugumanolepiraso.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/nofodogef.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/chori_chora_movie.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_off0000d354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD354 5112 bytes
SHA-256: dd1ca10e4d3eb22f795ab0cb38f2dae0522b544a896e78b75f3a71e7b75e30c0
font_01_sfnt_off0000e4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AD 10276 bytes
SHA-256: 5e69134c4f2fb63d1a95c048ba3d50c7dae0b29b8b04a68e7d2e1cd050cb47bb