Malicious PDF — malware analysis report

Static analysis result for SHA-256 05832871e9e8b59f…

MALICIOUS

PDF

49.3 KB Created: 2020-10-11 02:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e52e21ce780fffd109469fc31e17dc00 SHA-1: 5e9c7735482716ec2ee14ea190b18f7252dfdb54 SHA-256: 05832871e9e8b59f1ade1d3b4ab325058026252b3fca8437d993edb4b09ff3ed
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=lahore+city+guide In PDF document text
    • https://site-1042101.mozfiles.com/files/1042101/3018354950.pdfIn PDF document text
    • https://site-1036746.mozfiles.com/files/1036746/78200091658.pdfIn PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/xigegabikibo.pdfIn PDF document text
    • http://woxuvifa.jamieadges.com/uploads/1/3/1/3/131379256/tupikudodimajan.pdfIn PDF document text
    • http://zotebep.heikecoffee.com/uploads/1/3/0/9/130969191/7871230.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/lionhead_rabbits_baby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6546/6270/files/20906279142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2746/6904/files/maine_west_high_school_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7320/4124/files/31234540698.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 4808 bytes
SHA-256: 05139a914daa75393eb67c58bccf11a2ff9cf9f526814e73629b674875f97b18
font_01_sfnt_off00008696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8696 10472 bytes
SHA-256: 83955c5203fececef830c9cacd3a14fe9538afbd46d79864cf6cdaa07aaae08a
font_02_sfnt_off0000aa59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA59 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34