Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7edd3f9fbc4513…

MALICIOUS

PDF

55.6 KB Created: 2020-08-22 09:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a40c86376c7eacf445013cc2934fd192 SHA-1: 0a3e280f21ad14ba2685b56cbd9695daa4c6ddcb SHA-256: bd7edd3f9fbc45138e2ef3cd622afcef5f404afa2d27f9630312399d7d59351e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate a PDF link farm, suggesting the document's primary purpose is to distribute malicious links. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous links points to a likely phishing or malware distribution attempt.

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.ru/pify?keyword=anbae+per+anbae+video+song++1080p In PDF document text
    • http://files.2ndcongregationalchurchvt.org/uploads/1/3/1/4/131406715/8d0796.pdfIn PDF document text
    • http://pofadiva.jwhitneyart.com/uploads/1/3/0/7/130775565/2726583.pdfIn PDF document text
    • http://pufub.goucherstudentartshowcase.com/uploads/1/3/1/0/131070036/b0a4939cfe.pdfIn PDF document text
    • http://pobumeb.imperiumduelist.com/uploads/1/3/1/3/131398097/c666a4e.pdfIn PDF document text
    • http://kixisu.byyoursidepet.com/uploads/1/3/1/0/131069934/8014a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/baldwinsville_ny_police_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/fafikuzozewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/forubemiwigofojepenowura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/30437407296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/63956189001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/tonufajanewimaleleduti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3240/7198/files/gumisofijumalonotuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/hollow_knight_simple_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/50678799319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/bukeru.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB2 5672 bytes
SHA-256: 7207569ad705a2b288c8b27ae8e6c00652108190c9c869642021ab87cbeb3cb4
font_01_sfnt_off00007104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7104 2968 bytes
SHA-256: 1ed1850b7abe47cbba7eff6020941248d9efbd41917d2ae250e0d3fbb66c7b3d
font_02_sfnt_off00007d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4A 3848 bytes
SHA-256: 761fa81ef7b6b8ce3808fd7a13cef83f453e2044ed4b460141bdb224bdf46838
font_03_sfnt_off00008bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 2732 bytes
SHA-256: 1b65ff82cd43214772f169589416d14d1520d367b20425952ee9b3c32855a61b
font_04_sfnt_off0000962f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x962F 10228 bytes
SHA-256: 9e2d110260619d1e9d81f7a51db5154f701ca5f0e153c215eb89140f5c270204
font_05_sfnt_off0000b968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB968 16656 bytes
SHA-256: e923e76bf89b118ab362d26bc160801f6df3e0a9971dbff99d798902b4fceb4d