Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1fd7a73c12318f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-31 22:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d1edcba0871024a73bf0a8ff6d302da SHA-1: d3d5980ea108caa568705b79d4b82114a2bc884c SHA-256: 0d1fd7a73c12318f84e942fec22707c70db6563ff54b3a33bd53ca809b955ef9
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/wix?keyword=non+cook+lasagne+sheets+tesco', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.com/wix?keyword=non+cook+lasagne+sheets+tesco
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/46865542600.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/benokit.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/binesh_babu_violin_songs.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/arraylist_em_java.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/82871392469.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/flowers_for_algernon_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/gunup.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/45021901593.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/64374273930.pdf
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/spelling_words_with_silent_letters.pdf
    • https://static.usrfiles.com/ugd/9e41f0_f48db3113fed483dbebe5ea179f1bc24.pdf
    • https://static.usrfiles.com/ugd/0e2875_f36010fce6b741d8a65722c6b13f0de1.pdf
    • https://static.usrfiles.com/ugd/fd30ac_8b381f865100474f8b50ea15c0fce6cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b0978d96f8c45b39f765347f84a02ea.pdf
    • https://static.usrfiles.com/ugd/d5415a_fc14ed2a49714e969fdb85c4dc1df503.pdf
    • https://static.usrfiles.com/ugd/55f640_82e5b96924e04066b29125bb76d0c3e5.pdf
    • https://static.usrfiles.com/ugd/ace02d_08adc7f9abd942ce85069520f28643da.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_off00005634.bin
789eff27a2e94d18e507c5cd55a285967d86d7ee0a8e5af82604b3121f1f1373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5634 4996 bytes
font_01_sfnt_off0000673d.bin
c745db1c962a5f670b6803dd08a226e7ab6c503a05b4f13803311a1b65aa2db0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x673D 13672 bytes

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