Malicious PDF — malware analysis report

Static analysis result for SHA-256 9130a02fe93c8b21…

MALICIOUS

PDF

48.4 KB Created: 2020-09-04 23:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4550b2f398410aa9926e52fd323e339d SHA-1: fa77af6efb1c90df6f6e7c56ed9ef2db0b373796 SHA-256: 9130a02fe93c8b2153015eac137258185d6f93095c981510af6a3a3d9cabb7c2
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector URL. The document body text, though partially corrupted, includes the target URL and a search query, suggesting a phishing or scam attempt. The primary heuristic indicates the PDF links to a known malicious redirector, and another heuristic identifies it as a link farm designed for SEO manipulation. No scripts were extracted from this sample.

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.me/wix?keyword=krita+export+animation+as+sprite+sheet In 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/1/0432/8849/4236/files/molly_parker_movies_and_tv_shows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6701/4297/files/xovabamujufize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/timemudokor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/sozif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8171/files/lagu_ending_byousoku_5_centimeter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/24810282401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/red_ochrestra_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5304/7195/files/how_to_leave_a_steam_group.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3eed2b_436f58d732ec456f8c6bcbdc62739de6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ceb2e8_37f569238fc8483d8892ac58545ca03a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b0ad4987847744cd9d878a83d8b35a12.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_63ff537e461342e2964cce019e2f251b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3325f_7a2199bb7df347fd9bf6b61898e434f3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e8506d_5c97e135152345909e6a1a4b8078d6a8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e5df_e325080e4147494a9382e92101dedd29.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ae15ca_d7123bd22f144f43abefa387be7193c1.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 4852 bytes
SHA-256: 65bdbc90a372f1dda88e773b7462142e4c09629da3219164d4d775fc56b4c185
font_01_sfnt_off00006e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E65 10108 bytes
SHA-256: c80e0083c55f44e45994f03c3f3c858840d13cdf2e2e87d5da82f7cde8f3e6ab
font_02_sfnt_off0000913b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913B 16064 bytes
SHA-256: 62057359ad22ed6c79ab6a94c34af50e7f9192dd49eed379a27769cab1f8071c
font_03_sfnt_off0000a5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378