Malicious PDF — malware analysis report

Static analysis result for SHA-256 38799dd3bea5ba71…

MALICIOUS

PDF

52.5 KB Created: 2020-08-30 17:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 416c0c0ec10324de780f39e1700885a4 SHA-1: 4cade6e2d4960be60d6ee18b584dc530f2d04e94 SHA-256: 38799dd3bea5ba7185c1baad02a19aedf04ebf00e10ff9eb6cfae3398bead02d
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=cross+church+carlinville+il'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'static.usrfiles.com'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to encourage user interaction with these links. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cross+church+carlinville+il In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/f46427_9480593f26c64a97afae4739745ef0c5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/822ecd_8e925787845e4a319b71e734c3051254.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f96b02_6603da1588254e0d9ef9d0e30a1d1ecc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cb927_6e59e659cf444cf6b03a716b0463be27.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_86b3e735cce247c796b4d063db64c3de.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1aa57594e02e441ea95b5da593fdcb4f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d29c27e147c94f83a57bab91cceceba3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_02fdf7ef2b034ecda35f0a51f9c8da88.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ae15ca_e126f3070c23441fbb13a1e3901f611b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f14cf6_f36cd54442a94048ae86d95ae4938b75.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_715346d638d14508a09eaaf21faff564.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_07840ca1bf734c56adf1ec0a5d14d843.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9b94b05d034940d8877c2d6facf28444.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/74a852_f0c3057eb1064b73a005b879f5361838.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7d21c0_4fd85d303e5d485297c0d804fec33226.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7bddbc0c184c4f569ac293a086fe92a0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b67014d539ea4db3bcd7b30ca35ce6ec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/72216b_ecddd486384b4340a02e39e677d9e119.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000792c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792C 4852 bytes
SHA-256: 7b9007ffb43807d1c4237e10b93806b0359aaac71868af3ef95cf8be735e5ea7
font_01_sfnt_off000089a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A5 11276 bytes
SHA-256: 25b34d6f4ca1e777523379a96461ba781a421c68270fa9ebd9c1efe6c3b5bdda
font_02_sfnt_off0000aebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBE 16304 bytes
SHA-256: 440b159d14de00d868b99d07762b2ca59c30c403935a56db5d29518140bfea0c