Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1b606f60083b42…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 22:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 01fb6851550afae77c30dfd05075b252 SHA-1: 2f9968cea328201991b168c7276535c77da9fc69 SHA-256: fe1b606f60083b42e4663c7d67f6d7e7e09e06a6dda48db896c016843e5c08e1
194 Risk Score

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.cc/pify?keyword=tamil+tr+movies In PDF document text
    • http://pukoki.tridentwater.com.sg/uploads/1/3/1/1/131164250/zopesorupi.pdfIn PDF document text
    • http://files.softerthanbrittle.com/uploads/1/3/1/4/131437307/df9b06fe.pdfIn PDF document text
    • http://files.allthethingsshesaid.com/uploads/1/3/0/9/130969577/tanebesi_depozasajevami_liraz.pdfIn PDF document text
    • http://files.teamsalesvictoria.com/uploads/1/3/0/7/130775368/batuzepovis.pdfIn PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.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/1/0434/0908/0477/files/kizoraxovogixuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/cursive_writing_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0579/6774/files/jowojifutovexafojigarobej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/tamil_thiruttuvcd_movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70913092576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/fikowapebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/20936234325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/tujedupadeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8073/files/cursors_hack_pastebin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/174175562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4982/5942/files/halving_2d_shapes_worksheet.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_off0000602f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 4840 bytes
SHA-256: f232856d9f2bb58bbefa606323ac90a1af355f18f1923026bfb3f8c5c34a7e10
font_01_sfnt_off00007092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 13832 bytes
SHA-256: 755edbdacd4260dc8d6870d0bd0261ea7677993a4cd08255ff16cf932ea9cdf0

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