Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faa3984cb944943…

MALICIOUS

PDF

60.7 KB Created: 2020-08-31 05:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 041cbb6d8b037c7002398d557a1a8ac4 SHA-1: 66f9d42ed8ef14596e462370cf22981edbe1db0c SHA-256: 9faa3984cb944943cbc3a6694eda7a830b98b706157916ca9de74f047b2dee89
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=idioms+and+phrases+with+meanings+and+examples+pdf+free+download'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The ML classifier also flagged this PDF with high confidence. 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.cc/wix?keyword=idioms+and+phrases+with+meanings+and+examples+pdf+free+download In 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/1/0437/2050/7544/files/bus_eireann_100x_timetable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8956/6627/files/aws_cli_cloudformation_parameters_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/90738385546.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2b09b_4971a1c612194d46913b730259bd587f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dad90e_49fdfdfbe9ad4874bbbd565082293cc9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_76caa8574d1f42748c249e5a7a8c8f39.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/mudupefokusadolowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/surah_al_mulk_arab_dan_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/pizza_bolis_menu.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1eabd907aca14637ae146caed76fda28.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eb4c03_2439056040244652bef1f635a6cbbb4d.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_off00007473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7473 5552 bytes
SHA-256: 070d2496ac05e62f7682b5bd42b3b5213f9aff88bb48b4c6135716b051762ce3
font_01_sfnt_off00008743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8743 10152 bytes
SHA-256: c7fe6e626902f3432bc27701c099c27840b061e3a4bcc47b739732f7440cc13a
font_02_sfnt_off0000aa4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA4A 16060 bytes
SHA-256: 4471f92216f50ed59660dfde07325d7bc7936b356a877ae20405b399f7876638
font_03_sfnt_off0000bf18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF18 12068 bytes
SHA-256: b6bd1cae98c89eb7117bcbc83b4ec2e1dee2e67132b441a8c65cbfdbc553b7af