Malicious PDF — malware analysis report

Static analysis result for SHA-256 18951a130d24e64d…

MALICIOUS

PDF

47.8 KB Created: 2020-09-02 23:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fc557dfa3887782abf8074ddeca5927 SHA-1: 6f5cee166221caeb1d2f1ea7fa61ff3e3723c6f1 SHA-256: 18951a130d24e64d96a1a86c3c9fc411b807a9000558760e675837f3767874ac
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector that is associated with malicious activity, specifically targeting a 'critical ops hack apk aimbot'. The document also contains a large number of links to PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The presence of a 'download button' lure further supports the malicious intent.

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.me/wix?keyword=critical+ops+hack+apk+aimbot
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0006/2371/files/93087483450.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/24310330347.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/61941003054.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/93588796672.pdf
    • https://static.usrfiles.com/ugd/9e14ca_17743068dd4342dea83b5160084945fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e178cdb969847e5933a8d0d38cee5e7.pdf
    • https://static.usrfiles.com/ugd/34ec99_583aed2ae3ee4042ac570e6b9e8dd2be.pdf
    • https://static.usrfiles.com/ugd/bae363_50c098f820ec41bebe18da6257c94b8b.pdf
    • https://static.usrfiles.com/ugd/275374_bf3321eca2de4226ba2c2e39ee0cee39.pdf
    • https://static.usrfiles.com/ugd/8b2c09_5746f9e06fca40ddb9efd876a4b55444.pdf
    • https://static.usrfiles.com/ugd/1decf9_a9e791259e6843db8792c6eecb887763.pdf
    • https://static.usrfiles.com/ugd/9d66c7_cdbc46c79b4f4c4d897e14cb2f7aac34.pdf
    • https://static.usrfiles.com/ugd/9904c2_b47620b9c684460593ad4c44add8bbb3.pdf
    • https://static.usrfiles.com/ugd/704566_e11531f37ebd4f6fb444daadc7d02e47.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5ee06e698d144a9bf690d5043493013.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_off000069ea.bin
6019b6d39549e910b57662e9999f2bdf9a5fd7f2c726218bb3ed29ab855ffb7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EA 5280 bytes
font_01_sfnt_off00007ba2.bin
a6cc5cb1b61cbcd9ad058804da9940a118ef15623a98aaeaf5a24c6be6376528		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA2 3272 bytes
font_02_sfnt_off0000893e.bin
10139490e334acc27bb3d9f8045556eb4136f3e89c6f3c5972b669b30158ffa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893E 13368 bytes

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