Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4a097053698587…

MALICIOUS

PDF

44.6 KB Created: 2020-08-14 19:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77f3ae204d6edfa3e5e2a170721c33fa SHA-1: d286cd4a20c07ffcbeb0e68e838134382ee9d35b SHA-256: 0d4a0970536985877915081092fda4915bdebe51c2b9ab933f94b150ba2e5531
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.ru/pify?keyword=check+my+imei+android', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to lure users into clicking it. The ML classifier also strongly flagged this PDF as malicious.

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=check+my+imei+android
    • http://files.adamswellscrisiscenter.com/uploads/1/3/1/4/131406735/1419159.pdf
    • http://files.efficiencybook.com/uploads/1/3/1/4/131406714/21f97fceb118aa.pdf
    • http://files.azaleaandrosebudknits.com/uploads/1/3/1/3/131380158/letubaledosa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/9772/2785/files/hazardous_biological_agents_regulations.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/amerikanische_tastaturbelegung.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/rubevotunokejufaniz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4743/files/41277468158.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/17557558180.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/lijagoruxalolep.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/bemedopapudaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/1833/6925/files/sepotozipubigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/bhagavad_gita_book_in_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/luvanuketutujazipep.pdf
    • https://cdn.shopify.com/s/files/1/0435/5024/5028/files/gemosemobanojevetawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/41297807856.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_off00007229.bin
dd83290f0462891134f6476fc888d5aaf5e488e70ed4c7b5d1b92bacbf293848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7229 5040 bytes
font_01_sfnt_off00008322.bin
55b80f284c7ad44af14a6ea1ecd3373eacc1e377f170b610fb32a4259285416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8322 10180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.