Malicious PDF — malware analysis report

Static analysis result for SHA-256 026150ecdaf1efeb…

MALICIOUS

PDF

65.0 KB Created: 2020-08-08 22:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccf63dea2e2d07e8efc663887ab7557f SHA-1: 48bf0923a66a86ed1880491f899f504c931bcbc3 SHA-256: 026150ecdaf1efeb34ee67cc61971dad84f4ed3129c692e2dce29556d4920347
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged by heuristics as a malicious redirector. This suggests the primary purpose is to redirect users to a malicious site, likely for phishing or malware distribution.

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.ru/pify?keyword=sinusoidal+pwm+inverter+pdf In PDF document text
    • http://taneba.behindthescenesinfirstgrade.com/uploads/1/3/1/4/131406082/lesovutisefej.pdfIn PDF document text
    • http://files.teacakeandgaming.com/uploads/1/3/2/7/132740327/9257101.pdfIn PDF document text
    • http://files.susanwenz.com/uploads/1/3/0/7/130776401/wadizonefe.pdfIn PDF document text
    • http://files.lifeaftersemicolons.com/uploads/1/3/1/4/131437980/18577.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0996/6239/files/ronaxanokukelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/lafavoxovorufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/83480338381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/loser_like_me_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/lijafazajopinipal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/85522063328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0246/7228/files/diccionario_biblico_ilustrado_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/introduction_to_robotics_craig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/gululefopatire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/jawoxenosoxugigaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/40684084478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/wizitutej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/gegevupajenuwotedawolinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/40290529756.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_off0000ac13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC13 5444 bytes
SHA-256: 94b3953896af4bc0d12801f3386144e140b8471729de7c76efbb32a0ac80f497
font_01_sfnt_off0000be99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE99 10356 bytes
SHA-256: d041746c49a9e1ae30ae85c08dffca0811fe828083689eb2138fdf2ee0aeea4d
font_02_sfnt_off0000e1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AC 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833