Malicious PDF — malware analysis report

Static analysis result for SHA-256 111d41e933250450…

MALICIOUS

PDF

49.7 KB Created: 2020-08-07 23:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9daa893fd429b75794c6a5a06fb7a47 SHA-1: 10d69195dafc08de41a1f014b852844e14774747 SHA-256: 111d41e93325045097eed6ebf44046a122221841d0220efd7b294a18dc21ef53
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=carbono+quiral+exercicios+pdf`, which is flagged as malicious. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. The document body itself contains garbled text but includes the redirector URL and several benign-looking Shopify URLs, indicating a link farm strategy.

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.com/pify?keyword=carbono+quiral+exercicios+pdf In PDF document text
    • http://files.safe-t-systems.net/uploads/1/3/0/7/130739490/4bc6d613f9d45.pdfIn PDF document text
    • http://files.coloradoinclusivefunders.org/uploads/1/3/1/6/131606027/wumelif.pdfIn PDF document text
    • http://files.firsthomepurchases.biz/uploads/1/3/0/9/130969075/ada83a4ed91c.pdfIn PDF document text
    • http://kobajeme.meowhousecatrescue.com/uploads/1/3/2/6/132695569/vofexame.pdfIn PDF document text
    • http://files.wls-phd.com/uploads/1/3/1/4/131437147/laxabobifotuve_pigebikegetib.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/1/0433/3443/4969/files/jumutanijosula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/gekulerozunekunojotediw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/81756727696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/60901432285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/81398569650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/27512183304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2155/7147/files/jifeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/69190553442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/6871167152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/schedule_1299-_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/48114681645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/29716570954.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_off00006e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9F 5388 bytes
SHA-256: 329bfa42ff27a47a771f638ff8a69eba6381cc20807cef73a4192e1eac789704
font_01_sfnt_off000080f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F7 10352 bytes
SHA-256: 9589b8c8b3bde1ff951c1855acfe0425b23546736d872ee3703f20a00b95bedd
font_02_sfnt_off0000a491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA491 16092 bytes
SHA-256: 5d067f3ed25c947100d6e11befc4ff8f2526c29946dd398e4c33d9c92d35bad5