Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd5d7995022f2a9…

MALICIOUS

PDF

41.6 KB Created: 2020-10-07 15:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 274348e898e9cf96cd140463f11593bc SHA-1: 6122b6a3b463db04f68c2ff27846adc2577abcaf SHA-256: 6fd5d7995022f2a9d113e10042c9c769fb66e8e79c96fdd5c609d7feb90a2b99
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://cctraff.ru/strik?keyword=asphalt+8+hack++for+pc In PDF document text
    • http://zelaraga.irishdancinglosangeles.com/uploads/1/3/2/6/132696212/tosovimiva.pdfIn PDF document text
    • http://bonanozaf.suffolkgolfstudio.co.uk/uploads/1/3/1/4/131406821/tupedamelidirob.pdfIn PDF document text
    • https://site-1039547.mozfiles.com/files/1039547/mevafamowozukisor.pdfIn PDF document text
    • https://site-1037885.mozfiles.com/files/1037885/54164802912.pdfIn PDF document text
    • https://site-1044207.mozfiles.com/files/1044207/75811144113.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/1/0435/4523/1509/files/the_journalist_and_the_murderer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2536/9754/files/sunudogekuxuniwifibafas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/y8_crazy_games_2_player.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7554/5509/files/59226233354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1360/6040/files/the_esquire_guide_to_bodyweight_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0081/8593/files/83318814057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6068/6748/files/stna_training_classes_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3174/3648/files/genukogemexuxofuximos.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_off0000654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 5352 bytes
SHA-256: 09b0cb7019233ce24780376e0cf392cbb9f62b41222e568beac687aaae90ce48
font_01_sfnt_off0000777c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777C 9980 bytes
SHA-256: c3dcb3444fcda2c3439ec8876004727b51e1a9848fb8e8556a2390998b6c0991