Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ff44d42a6d7b8e…

MALICIOUS

PDF

47.8 KB Created: 2020-08-19 20:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00bb6cb01ecf90933d51853ef80f6086 SHA-1: e8fbc8359644020a8033d88d66652fe877aec749 SHA-256: 62ff44d42a6d7b8e70901275eda96313dd0a1b3778c20fd513485191c7d38f8e
154 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'top 10 latest bollywood movies sites' which redirects to a malicious URL. This indicates a phishing or scam attempt. The PDF also contains a large number of links, many of which point to benign Shopify URLs, but one critical link points to a known malicious redirector. 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=top+10+latest+bollywood+movies++sites
    • http://kowiza.amyluckenbill.com/uploads/1/3/1/6/131606578/19a20.pdf
    • http://wafanuzow.literacy-initiative.org/uploads/1/3/0/7/130775448/3cd8efb9703c0.pdf
    • http://wopun.lyncohomestyle.com/uploads/1/3/1/4/131407921/a48f4947aa1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/waximejaruwozufanutapagom.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/fotoxosodovavodedidup.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/cell_a_molecular_approach_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1015/files/schnellster_boxenstopp_formel_1_weltrekord.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/zosazadorokutojaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6695/files/alchymista_zdarma.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/xilagegibejutelik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6871/1321/files/possibility_lykke_li_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/43596684643.pdf
    • https://cdn.shopify.com/s/files/1/0430/3706/5370/files/31235063497.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/43266217897.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/guarantee_letter_format_word.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_off00006f52.bin
d30f0f1c243cdcfdc7485601e075dfb5e8407ad77bba36e7ace78e3ee90cb479		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F52 5228 bytes
font_01_sfnt_off00008136.bin
d18c8c6bbb86dfd715ea584cc3cea7ae039958e361e85120d378e9a9160b7916		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8136 10272 bytes
font_02_sfnt_off0000a426.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA426 4324 bytes

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