Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c1260b8cceab2b…

MALICIOUS

PDF

51.5 KB Created: 2020-09-16 08:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 702b596af5d95d2498b3431bcbbd8d44 SHA-1: 829afbbdff3598436277ed4c33e5d89104ed9510 SHA-256: 85c1260b8cceab2bd12b37606d5685c2284fe49dd3d765224b21a294867c6f6d
194 Risk Score

Malware Insights

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

The PDF contains a lure referencing a movie title, which is a common tactic for phishing or distributing malicious content. It links to a redirector URL, 'https://ttraff.com/pify?keyword=emoji+pelicula+completa+en+espa%25C3%25B1ol+latino+malefica+2', which is flagged as malicious. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted, but the overall structure and embedded links point to a malicious intent.

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=emoji+pelicula+completa+en+espa%25C3%25B1ol+latino+malefica+2 In PDF document text
    • http://pagezuv.derekcovingtonsmith.com/uploads/1/3/0/7/130738531/4780f.pdfIn PDF document text
    • http://tiwejutuf.ditewigmorris.com/uploads/1/3/0/7/130739098/2590383.pdfIn PDF document text
    • http://files.yippeewebdesign.com/uploads/1/3/2/7/132740533/8726418.pdfIn PDF document text
    • http://gotilo.quackquackcolorado.com/uploads/1/3/0/8/130874118/0e2d5b50cf0473.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/zijezemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/kozuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/81128320360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9317/9030/files/nsw_traffic_accident_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4735/3511/files/13787513978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/loxarutaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1287/1576/files/crafting_calc_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/lulidododukusor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/housekeeper_resume_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4265/6415/files/divixevutitovaparotaba.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/99a8f2_5b788a92a80b470a9f276a25cf7d5de2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/39d081_193567d90e224a3bb5079af46c6a2462.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f5892c_4d0f47d1972d47c9aa7c5cc4c4cb88eb.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000790e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 5324 bytes
SHA-256: e1342002167cd1c2a7f119ba83dafa1d40f45dcb6f3415b87718ec91312f8089
font_01_sfnt_off00008adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADB 11356 bytes
SHA-256: 031fb5b279bc897b9436d1cf47aa52f9abb397daa0c90736ad7fdd4577c3baef
font_02_sfnt_off0000b010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB010 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3