Malicious PDF — malware analysis report

Static analysis result for SHA-256 149200895efdc8f5…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 12:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92e74215b895631a214562eeab9bb37e SHA-1: 0e332bbabbd701e75572ed1be8c8df00c71f84eb SHA-256: 149200895efdc8f585c21d6f5127661affffb381971a4376bc1c0aeae84416f5
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=liquide+amniotique+et+ses+anomalies+pdf, which is flagged as malicious. This suggests the document is part of a phishing campaign aiming to direct users to harmful content.

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.
  • 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.
  • 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=liquide+amniotique+et+ses+anomalies+pdf
    • http://tuzaxe.wellesleyhslibrary.com/uploads/1/3/0/9/130969045/jurud-kaliganopipu-rupobobagizixow-fidulosunedim.pdf
    • http://files.thrivedirecthealthcare.com/uploads/1/3/1/6/131606874/8433228.pdf
    • http://files.coneylove.com/uploads/1/3/0/7/130739510/1391314.pdf
    • http://rozeze.huskermotorsports.com/uploads/1/3/1/8/131856158/09d034eaa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9931/5610/files/vosalimipabumagojufobomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/toruwol.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/tujusipekereme.pdf
    • https://cdn.shopify.com/s/files/1/0432/3616/3747/files/vufununik.pdf
    • https://cdn.shopify.com/s/files/1/0447/3788/8410/files/volume_of_a_cuboid_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/89209732315.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/nexesoxojenakex.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/mewusaradinexivogademun.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/gemajakafemub.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/piwuzanigisa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/luwisisasob.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/10362874535.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b31.bin
993933ff1a414aa57fe5c15903f12488fd21461801cc1d5960e8372e5b9f2e81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 5160 bytes
font_01_sfnt_off00007cb4.bin
ab75d134fcffb53142a1665ae8bd6089b03339835d4553fe1704b191c49bc676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 11720 bytes

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