Malicious PDF — malware analysis report

Static analysis result for SHA-256 179ea027cf315b1f…

MALICIOUS

PDF

39.3 KB Created: 2020-10-02 10:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bceaf73f026debde03c945e8669180d3 SHA-1: be0eb57f23184f47fadedd12e3a910059b802b4e SHA-256: 179ea027cf315b1fd8bdda8b5837ebf3fe1db84071c319225e89bc0634c98663
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.link/pify?keyword=dodge+ram+1500+towing+capacity+2015 In PDF document text
    • http://jopinot.vzwierphotography.com/uploads/1/3/1/4/131452860/9813037.pdfIn PDF document text
    • http://bakutime.icomppower.com/uploads/1/3/1/6/131637056/2792083.pdfIn PDF document text
    • http://wobipo.butsavageracing.com/uploads/1/3/0/7/130738721/dowogaxilixemejazo.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/1/0463/6160/8347/files/myaarpmedicare.com_2020_provider_directory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4203/1774/files/dragons_dogma_badge_of_vows_13.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a37544-87da-4094-b11e-345b88877c03/31217372611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4bcf873-9ba0-49e1-a167-9b9212da52d8/vukifawakelon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8802/7304/files/william_wirt_middle_school_demographics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1310/6596/files/gajoxuzodurupar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4357/8278/files/vijogenuwadikafanivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/prezi_entrar_ami_cuenta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0982/9795/files/pasit.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_off00005b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B04 5824 bytes
SHA-256: 257a2147876c20cc7e71c159bac4d0e25fc7e995a78991a28ed8f09c518a84eb
font_01_sfnt_off00006eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEC 9776 bytes
SHA-256: 481b5e1807a2a399c7be0162aaa36a0985cf9e25cba660555fe4a17ab483b4f2