Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ff6f673b1089a0…

MALICIOUS

PDF

58.4 KB Created: 2020-10-11 20:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 207c74192351a8a8384c0cc19ba6dd69 SHA-1: 6aa476da23f12386d2f76d6f53101a148afdca1a SHA-256: 73ff6f673b1089a0587c69ae3d484791b7c063ce55bd5aa9ae6001f3074d1a24
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=club+penguin+puffles+names In PDF document text
    • http://files.ekubcm.org/uploads/1/3/1/4/131455198/dapuwuwurepi_gumisewelar.pdfIn PDF document text
    • http://files.cyberedchristianschool.org/uploads/1/3/0/8/130873826/2411584.pdfIn PDF document text
    • http://xekez.idahonordic.com/uploads/1/3/1/4/131454029/nakuxu-dumegek.pdfIn PDF document text
    • http://files.holacommunityarts.org/uploads/1/3/1/6/131637147/4022183.pdfIn PDF document text
    • http://files.vivianmoraart.com/uploads/1/3/2/7/132740181/pamerinexaki_bibukirag_kafogozusutevon_wunafujutu.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/5daca2ed-f5e7-45c7-815f-e37a46934c66/29486665477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/859b2ce9-59b2-414f-949d-19baffb95c1f/54262407382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41aef6a9-41cc-4f75-b4d6-75689213e340/66370178185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aeaab78-b674-4e71-9911-52a09cd4fc58/joguvonabadilosalifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80de97dd-67ba-4f05-b078-eaaf696fff81/88160609795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f705ee-e843-4f19-b57d-9bc42849356d/xovipelesomalix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3783fbbc-dc35-47b3-b19b-8107de17e3a6/75435547402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cb87029-a280-44d5-b031-43a3496e4670/tegubojijodazagisaxikewen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/feponafemupebizupunukaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1520/0158/files/shirley_jones_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8961/7311/files/something_about_that_name_youtube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/veroxavudubijinamovozaxus.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_off0000a613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA613 5168 bytes
SHA-256: 35a163415fdf4c4523f1548cdf900a6ca0c127f8de35db2851d322f5ad447cfd
font_01_sfnt_off0000b79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB79B 11296 bytes
SHA-256: cfa1b2674a1baf577a91c1b0888a547a29e79fde6cdc352d7fba26dfd466cdb9

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