Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0282f3432fb6b5…

MALICIOUS

PDF

38.3 KB Created: 2020-10-16 08:35:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: da56156be0ba67b2926d089f5f967038 SHA-1: 33dd06dc483a2a86b882461912263741a5faccbf SHA-256: 1b0282f3432fb6b5fe5673d3acbdd86d807f5e01c88b6466f751024fb9afaf80
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?keyword=altronix+6062+timer+manual In PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/luraxo_pifesejix_dugelusegi_vuwimezokawel.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3718456.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/198c460007.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/4918653.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8481/4782/files/lorientalisme_edward_said.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0799/4788/files/persona_3_ending_sad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8852/0382/files/21293422305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3785/0262/files/sailing_fundamentals_gary_jobson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6304/0408/files/avengers_endgame_online_stream_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fed50be-edf0-4584-bd68-35caa6e64d5d/9367133240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3847/files/and_then_there_were_none_audiobook_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6341/7759/files/2008_bmw_328i_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1460/2401/files/nikekupipodifetemulaxaker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/a_scandal_in_bohemia_penguin_readers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8462/0991/files/dragons_lair_apk_cracked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9536/2209/files/strategic_relocation_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1567/5293/files/51602589708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3795/7537/files/23950514626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0341/2131/files/assurant_duluth_ga_phone_number.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_off000058b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B4 5140 bytes
SHA-256: 7b308f50aa42828f14c21accb220e967d125fdf0ed9101a74ab8ba855acd0007
font_01_sfnt_off00006a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0D 9884 bytes
SHA-256: 7b2a240bbe9a1f142c24826b61a3149008f7c8d9bda1d0d9ff343020340a2a62