Malicious PDF — malware analysis report

Static analysis result for SHA-256 694e5584a0377022…

MALICIOUS

PDF

53.5 KB Created: 2020-08-08 06:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5580a54255ccafa2969513874d78b9f2 SHA-1: 489f486ee6131673a1ce860f8f779178230d0178 SHA-256: 694e5584a0377022097255191688705859e95867cec5ec1b18c8807cad44116f
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead users to a compromised site or phishing page. The document body itself is heavily obfuscated and contains references to the embedded URLs.

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=meaning+of+built+environment+pdf
    • http://lifilu.ormondbeachdermatology.com/uploads/1/3/2/6/132682883/bfb3c459b208.pdf
    • http://files.re-crafter.com/uploads/1/3/1/3/131380558/palawigan.pdf
    • http://files.outsidethebox.nz/uploads/1/3/0/7/130739616/wufap.pdf
    • http://files.eatmeh3.org/uploads/1/3/1/4/131482937/8208814.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/jopepoxomakosafo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/96198061929.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/zetibevilikufufozuletitob.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3799/files/65764423397.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/zoboruruxisexevepimigol.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/74880495606.pdf
    • https://cdn.shopify.com/s/files/1/0440/7348/4438/files/xuxewizabapuwepekiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/definition_of_noun_phrase.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/71588590439.pdf
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/wemovorosesukegaxuvide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/22669088479.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/93264176096.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/nuzisuteli.pdf
    • https://cdn.shopify.com/s/files/1/0440/5788/6870/files/42946033015.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_off000092c0.bin
1e6856c775007ce3fb9dbb55fdeffa8b6ccb2949df3e38887fa6cfc781b3a825		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C0 5388 bytes
font_01_sfnt_off0000a514.bin
44eab6dadaf11ca6b241faf136edadcd7223a937b42208ad2465bd2c2078bb91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA514 10320 bytes

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