Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f809ef6376cf69…

MALICIOUS

PDF

41.4 KB Created: 2020-10-05 19:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 035777df9c838cddcb5de986f04fed1a SHA-1: f55088788228528ccd96c9b23126fbf6ea6fd484 SHA-256: b9f809ef6376cf69074d7c7c78ea3144bc9a48362ad01762ad84d3bbe6e8ff38
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://ggtraff.ru/pify?keyword=binomial+distribution+problems+worksheet In PDF document text
    • http://files.rebeccaattia.com/uploads/1/3/1/6/131636927/tazalesipa.pdfIn PDF document text
    • http://files.mrkellymathclass.com/uploads/1/3/0/7/130740242/sagibofok.pdfIn PDF document text
    • http://jotofopal.healdsburgflowers.com/uploads/1/3/2/3/132303307/ccfaf14e.pdfIn PDF document text
    • http://nuxubukid.jenscontagiouscooking.com/uploads/1/3/1/4/131406071/sumokove_bedat_neken.pdfIn PDF document text
    • http://tifet.shoshonicattery.com/uploads/1/3/0/9/130969483/e438a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ebf279-5b5c-4728-baee-3b46f26ccabd/boxevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e8228ab-2132-4a93-88ec-13e6793148e1/xezoluwosowuripapewamos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710ad9be-7d50-4120-a886-107cb406ea1a/88293185000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c2078d5-6d38-491b-9f9a-209b78c1c5c7/varop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bfcea54-59b8-4ee5-ac79-800de2ea97a6/bovepigow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1310/6596/files/girl_scouts_los_angeles_cookie_rewards_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7490/3452/files/honda_radio_code_error_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0882/1918/files/dumolulikekavavebuwegeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/tomi_sushi_buffet_coupon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4904/8474/files/46569597675.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 8

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_off00006448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 5544 bytes
SHA-256: 7ff06a5b4cf64ea086b67850d0795e093436e293bcbdb7d31de7f8d412e733dc
font_01_sfnt_off000076fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FD 9880 bytes
SHA-256: 07792699cc0773e3d7c7a443ebb2a8d9a31f7d79f4cc2b2baf3e982243cb4fec

Open this report in the interactive analyzer, or submit your own file for analysis.