Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c71cd9d01f68811…

MALICIOUS

PDF

35.8 KB Created: 2020-10-16 11:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 44f13bce3cca73dbc39df2bda7679560 SHA-1: d2c3a6878cb93eedefe318e8ded643cb164efb94 SHA-256: 2c71cd9d01f688115618bb1eae869df4ceaab8b97a90164a4df263cdc4b4504b
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/123?keyword=solitary+fitness+book+pdf In PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/mudonij-tojoxe-xewej.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/kasodopizafazakoxuk.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.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/1/0493/1911/6966/files/chapter_4_tissue_the_living_fabric_page_85_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9de2cf9b-1238-4d67-aacd-2492744f405e/34231541554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2bbf997-7eb2-4fcb-8bb5-07151846cf98/movavorujujuxim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbc6a579-cdec-4278-8588-1edf40eaf6bd/69352739703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40c97271-0915-4a9c-b7cb-40db937b954b/68389976118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42753463-d750-49cb-b62e-f4bb0d7045ca/55185914481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0060/2013/files/34419550698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/holt_chemistry_chapter_4_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7971/3177/files/62074132841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/patotisizileze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a001e42-869d-40da-bc89-393ae2bf7ff0/81024754549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4168c37-1966-48dc-b1de-26856692993b/jijotepar.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_off00004f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F18 5444 bytes
SHA-256: 3b92cb12ebb1a63e2cdf65733e55981bedf995b21f67be63c4b6e9c312ccac21
font_01_sfnt_off000061a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 9664 bytes
SHA-256: ad75fec8614e6719f11669a54eadc3dabc3a3862367d16d4b910bd030d668682

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