Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c48b4dde500740…

MALICIOUS

PDF

38.8 KB Created: 2020-11-01 00:10:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: df249cbd891f0b896a645ead2eb63fac SHA-1: 1dc0c4271b7cf159a31aaf7fe3c9b1e04c705bf3 SHA-256: e2c48b4dde500740a3f6cd8dbaf2fd0c96d9b56d4d708c660bf103295cf8a702
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=clark+photo+lab In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f874dcc597ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f88519d29e6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8ce95d3aa96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5f896ef18cd71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5f9b61f566bad.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/1/0502/4812/2546/files/wusilewewokemav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1421/files/anju_and_kafei_quest_fail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8473/2310/files/tfx_power_supply_dimensions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8493/1765/files/roselijawaxamexix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8bb627b-e53a-4bdf-bb0e-259c2b0c5173/bakadefen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9623/4902/files/manual_registradora_olivetti_ecr_6800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/paxajosokuripa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1450/7672/files/zonexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2351/3778/files/dukakobowotevetafuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5270/1125/files/calvary_missionary_baptist_church_dayton_ohio.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_off000057bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57BD 4840 bytes
SHA-256: d2c05b77afa1e8a84e24c982c0fe96a08c5a1d32feca6796281c536f28ef8990
font_01_sfnt_off00006821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6821 11572 bytes
SHA-256: 0a6ccdf44d722df5218b9081ed5db368e1f6a2643b99d5f40c58aa512c9bd1b3