Malicious PDF — malware analysis report

Static analysis result for SHA-256 daea4d2a351bbd52…

MALICIOUS

PDF

40.5 KB Created: 2020-10-07 00:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ea896bf446efaf437e323d3ddbe78ec8 SHA-1: e4c602805644ea8c4b8248246bf2db3100589b52 SHA-256: daea4d2a351bbd52dfe282754fe9246e13934b08e9bf98ce76f996982a38a1b4
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/pify?keyword=red+lion+hotel+billings+mt+directions In PDF document text
    • https://site-1039963.mozfiles.com/files/1039963/pazomo.pdfIn PDF document text
    • https://site-1038969.mozfiles.com/files/1038969/vajosikofeli.pdfIn PDF document text
    • https://site-1038948.mozfiles.com/files/1038948/lirutugadoxivapirazama.pdfIn PDF document text
    • http://jifotuget.evolutionalgoodhism.com/uploads/1/3/1/3/131380828/3684431.pdfIn PDF document text
    • http://rumesak.greenbeehoney.ca/uploads/1/3/0/8/130814085/8436824.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/1/0429/0006/2371/files/76023386158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/typical_bedroom_measurements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0298/2310/files/69088929311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3044/5731/files/death_penalty_soccer_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/1605243755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d2a114-3cce-46d1-bb38-2d4c7189b848/pizorafipejupoximipajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be73c4a1-edf2-49c5-9776-c8553a8024a2/dipimelesekire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/567be1f5-e834-465a-aadb-1424bb967df0/wivadilomukomamawegaxab.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6021 5288 bytes
SHA-256: 5764190d19702ad5a37d0f9189ce7ad5fff8cef4a05e8f74426690ad099f1bff
font_01_sfnt_off000071f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 10332 bytes
SHA-256: 9b90dd856e57ac385cdf84b00e3470859a40c34df07fb574027b2f04491281da