Malicious PDF — malware analysis report

Static analysis result for SHA-256 58367dbbd8417f8c…

MALICIOUS

PDF

115.0 KB Created: 2020-08-20 08:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0058f3cd8e854c0e55ad75ac9d51803 SHA-1: d131d41f4ae7d367494dfa29c4b604bda4da46ce SHA-256: 58367dbbd8417f8cde0d2b9ae5986ac9ff0fdbc0ec16e02a88d3d9b0ee8d7648
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing 'Cisco ws- c3850- 12s- s datasheet', suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict. The primary attack vector appears to be tricking the user into clicking the malicious link, which leads to a redirector likely serving further malicious content.

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=cisco+ws-+c3850-+12s-+s+datasheet In PDF document text
    • http://files.uwchipsi.com/uploads/1/3/1/3/131380031/21406df865ed.pdfIn PDF document text
    • http://files.wildlittlemonkeys.com/uploads/1/3/1/6/131607131/ketomiwa-zabudap-jelujobi.pdfIn PDF document text
    • http://files.codeelectricmqt.com/uploads/1/3/1/0/131069812/7459308.pdfIn PDF document text
    • http://files.addaflooringandcabinets.com/uploads/1/3/0/7/130739366/9400469.pdfIn PDF document text
    • http://files.edmotivate.com/uploads/1/3/2/6/132681296/xuvageju.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/1/0432/4560/0936/files/dezoduxas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/55554796360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/17019723055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/79617011163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/donobotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0479/9639/files/lewafokuburapakipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/53061927447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/sql_database_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/81406697085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1457/6537/files/lvmh_annual_report_2011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/vikemirojuzef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8882/8829/files/color_by_addition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/86725219962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/davejolagudup.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_off00015eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEC 5736 bytes
SHA-256: f85915463ac114d410efa24aa6f48338326f53477bdcf8ab4090787a5d9eb90e
font_01_sfnt_off00017285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17285 17232 bytes
SHA-256: 7673ce376f2359b63eb9152766d7499793b00b214c7b6dc12f94d4477cb04101
font_02_sfnt_off0001a814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A814 16268 bytes
SHA-256: c13c73061a36bbab7dba68a0c7ccd42b426c19528502901f18dedde9d6c7394e