Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0c02c35e1ada08…

MALICIOUS

PDF

37.5 KB Created: 2020-08-30 01:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6373336ef69ec0ab18769f417f73bddc SHA-1: 416576357aebc47bfbb669e9052fe9c6a216f739 SHA-256: 0a0c02c35e1ada0874d840f56d176d467cd11155e5d7880c9e96ed5c7f66b627
162 Risk Score

Malware Insights

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

This PDF document contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to known malicious redirector infrastructure (https://ttraff.cc/wix?keyword=driver+monitor+philips+185vw9fbj%252F78). The presence of a download button lure further suggests an attempt to trick the user into downloading a secondary payload or visiting a malicious site. No scripts were extracted, but the link farm and redirector indicate a malicious intent to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=driver+monitor+philips+185vw9fbj%252F78
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/fungsi_kurikulum_pendidikan_islam.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/kevozejimitix.pdf
    • https://cdn.shopify.com/s/files/1/0435/3081/3592/files/sizun.pdf
    • https://cdn.shopify.com/s/files/1/0462/1887/0938/files/jinululovafulesot.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_6fcd1b9a84b044399234adb1c3dee749.pdf
    • https://static.usrfiles.com/ugd/9904c2_015b8d7dc4104d179e68ae3bd643eddc.pdf
    • https://static.usrfiles.com/ugd/253000_18f325b553444ff18494d621d9a93346.pdf
    • https://static.usrfiles.com/ugd/a64c8c_c791a5274c164424aeb48bdb7b0c8bbb.pdf
    • https://static.usrfiles.com/ugd/e2b09b_994ae3b5601c44188358a51b6b8274ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_11cf90d9264a4d69bbb1320605358a50.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6ba4b36a0154c989d0c4a13047bd913.pdf
    • https://static.usrfiles.com/ugd/26481d_8057000f357b4cb0990b69dea35a0c32.pdf
    • https://static.usrfiles.com/ugd/7598fa_b697b7a6c7254729aa1448f0ecefe0c8.pdf
    • https://static.usrfiles.com/ugd/43d598_cbc4529b64394c84bd501cf95ea207fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c47e28b1404b461f9bbef76a301e747c.pdf
    • https://static.usrfiles.com/ugd/e745be_3e4f433bd4b64a14af94b0ee64dae721.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_off00004717.bin
13eaf80273474460d4f2f7a408f41a85a19e66d59fdbd15c29b96da556581902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4717 5728 bytes
font_01_sfnt_off00005a99.bin
7ae17bdf9ba4da363d8164cd10dfcab3378bb158e78d09595ab136312e27b205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A99 9576 bytes
font_02_sfnt_off00007b23.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B23 4324 bytes

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