Malicious PDF — malware analysis report

Static analysis result for SHA-256 340fcbacef5822fe…

MALICIOUS

PDF

44.7 KB Created: 2020-10-04 05:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cadcba5ab2dc96c31d43ebcfbacb8bcd SHA-1: d9e364b7623a3593cf7705e43aa77d48a28c7274 SHA-256: 340fcbacef5822febcf254d70dfe4b55023b960e5e030e87040e65253b7967ed
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://ttraff.club/pify?keyword=hypodensity+on+ct+of+pancreas In PDF document text
    • http://files.halifaxstreetangels.org/uploads/1/3/1/4/131437676/tapijixexofoku.pdfIn PDF document text
    • http://files.johnhunterdesign.com/uploads/1/3/1/1/131164382/4495571.pdfIn PDF document text
    • http://files.toyama-book.org/uploads/1/3/1/4/131437123/texerifa-pivozabumuwonuv-tisarizuri.pdfIn PDF document text
    • http://files.hccvermillion.com/uploads/1/3/1/3/131381225/3529490.pdfIn PDF document text
    • http://files.claytonpondhoa.com/uploads/1/3/1/4/131407977/7912228.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/1/0492/7740/3292/files/quest_volleyball_net.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/pokemon_platinum_rare_candy_cheat_action_replay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/graco_nautilus_65_3-in-1_harness_booster_car_seat_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa660577-7e93-44c1-9ea0-2536c7d53832/69896450572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f2abb73-8aeb-4085-862a-407f1cdaa318/rotetedojajazutufowubos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73a52183-2dcb-4ace-ab12-9f38c88e2d80/jaretevareviwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a07dc0-61fd-4caa-8bf2-d9af28ff6b47/5187599027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba3672e-2174-447f-8b45-740238c03cdd/pebepuxununuvili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5320126-500f-485f-a15b-7b07b31dd90f/18572111364.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 5180 bytes
SHA-256: 7988201a2d1244e01b165e8272c1dbad3206d09d7d3f5edd7af25843bf2de210
font_01_sfnt_off00007e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 12176 bytes
SHA-256: ae838df0eafef9b75be391994bf04aa1ecf4b01785e4f5a9fbbc8315b0f0be06

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