Malicious PDF — malware analysis report

Static analysis result for SHA-256 199da76e6813c983…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 23:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bc05ac37ab946358679e0198fad10e8 SHA-1: 5ad6536f3b66e0d0fc1a906039590f155c7183db SHA-256: 199da76e6813c98365d67558fe962bf5d0a344fa9a96293ccfcd54645dd9b24e
154 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior by hosting a large number of external links, many of which point to potentially malicious redirectors. The primary malicious URL identified is https://ttraff.ru/pify?keyword=arcgis+10.+6+manual+pdf, which is likely used to distribute further malicious content or phish for credentials. The document's structure and embedded links suggest it is part of a link farm designed to manipulate search engine results and lure unsuspecting users to harmful sites.

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.ru/pify?keyword=arcgis+10.+6+manual+pdf
    • http://files.grandviewlodgeandresort.com/uploads/1/3/1/3/131379409/8c12cb2f9.pdf
    • http://wipizo.georgelloyd-jones.com/uploads/1/3/0/7/130775732/keboka-topozagipig-jomerumokijo-ninevexumex.pdf
    • http://nulabo.martypjordan.com/uploads/1/3/0/7/130776485/feroditivonuxuze.pdf
    • http://files.shadeswestpalmsprings.com/uploads/1/3/1/3/131384171/ligaloja-pirujoxopakizi-sifovazuvekol-fosetezifiniv.pdf
    • http://files.earthlingdesigns.com/uploads/1/3/0/8/130813514/1547979.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/9579/3568/files/clinical_pharmacy_and_therapeutics_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/windows_installer_cleanup_utility.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/61626517335.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/dictionary_of_theological_terms.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/55156576648.pdf
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/86751717444.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/72060748859.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/english_speaking_course_ebook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/57072677331.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/bemonc_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/povibudumubepub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006593.bin
41e594ca68e1a433afaa65b05a763758258e9973c677c382cf5334831be897d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 5420 bytes
font_01_sfnt_off000077dd.bin
be31d21ba22ba09e59c69e673523bad67c9f0d787ea115b71dc8c37cf0a5588d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 9920 bytes
font_02_sfnt_off000099dc.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99DC 4324 bytes

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