Malicious PDF — malware analysis report

Static analysis result for SHA-256 af34c999976c7d66…

MALICIOUS

PDF

56.7 KB Created: 2020-08-31 19:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 847782fac3e4f409958afe0745ae1a4d SHA-1: 38b3e023f567764f5630a86f9475dbc14c628d50 SHA-256: af34c999976c7d66026ba77e65d0e1782f7e7c471cc5194e814e3455ec4be2df
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, includes the text 'Beautiful html css login form tutorial' and the malicious URL, suggesting a lure. The presence of a link farm heuristic further indicates an attempt to distribute content or traffic through numerous external links, with the primary malicious URL being the highest priority IOC.

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.cc/wix?keyword=beautiful+html+css+login+form+tutorial 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://static.usrfiles.com/ugd/850f07_6387c22f56c24f9b90d11db945e1d66b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6d59ab_41a87b3d3df24507a2acc7b6c0ba8deb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e745be_c7401b156d674667abd983b1b195bbaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/download_pokemon_sun_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/arrival_2016_movie_download_in_hindi_480p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/dark_souls_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/52625494950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4540/4327/files/age_of_empires_2_installer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/elcoteq_se_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/6246459855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/nigeria_war_movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9008/7829/files/bull_shoals_arkansas_fishing_report.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 5228 bytes
SHA-256: cc6e3c116eb4af876a26fef03096fa5d9c05cd8c8ea2c5ef2f852600e624bfc1
font_01_sfnt_off00008279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8279 15180 bytes
SHA-256: 6777f956d0bb04adbe63529429b5f4a0594394c08a9a6b3a92125b38c5bf608d
font_02_sfnt_off0000b286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB286 16076 bytes
SHA-256: fce21d86c2b5faa43a5619d6c859002d414ef8720c10ef6ba746f045f1b0bfa7
font_03_sfnt_off0000c734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC734 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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