Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b41e0b388ca2b8…

MALICIOUS

PDF

499.5 KB Created: 2020-09-02 16:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5c4d6df1afd2f6f22cf354bd898c014 SHA-1: c02615480d3dd81ae896533f0154e4cd8b31adc9 SHA-256: f1b41e0b388ca2b83176b270ac33424ef8fe211b206d91755f43dbba1c686938
194 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also requests sensitive recovery information, indicating a phishing or credential harvesting attempt. The embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9813

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.club/wix?keyword=expressway+edge+deployment+guide 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/5ed537_fd113854f8d243a89edecb8359f95ad5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cfd0a_f9a13217e9714e91a23ec2af1ba4b642.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b42fd6_24f65b1e34094536aa54dd838a62fb3e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0f5b72_c4f776335a2b4a79b58fdfc5df373052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0701/2004/files/minexonibozovad.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3bf302_06de5c5d9c744ea9b87d2f65dd0d4f16.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e02969_ae2af55e6ac5495b891f812349d53dea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6842/4091/files/15399176484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/jobuwufifevipisofini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/patemawumibomodomolid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/godilusakopajemotifosono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/79562952453.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000761d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761D4 5496 bytes
SHA-256: ab811f72c72ab0db0c0f5a1d17947c827743f2b850821283967914b5ef78cece
font_01_sfnt_off0007749b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7749B 16208 bytes
SHA-256: c9836bce2da2a4c59ab9c47d7e96676a20689da333e4c52c181d5670dd48e322
font_02_sfnt_off0007a703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A703 16112 bytes
SHA-256: da133098c8ec00180ce5fe37c74b807b143adc5860869a2f7b6211e455203b10

Open this report in the interactive analyzer, or submit your own file for analysis.