Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ab022f043d55ba…

MALICIOUS

PDF

60.1 KB Created: 2020-09-08 17:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e322e67898a00f800c5b2d387cd71e SHA-1: 6bbf859c9cf76159ba3932dbb75a7e4f39131a39 SHA-256: 53ab022f043d55bafbc3b5bddef4ad50122a635e1d5cfaf8b8ff24f551a559a3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm of 16 external PDF links, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or credential harvesting.

Heuristics 3

  • 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.
  • 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/pify?keyword=bulkhead+transformers+energon
    • https://cdn.shopify.com/s/files/1/0436/0480/3741/files/airshou_screen_recorder_no_root_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/13381877735.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/fawevuditigopurepumexovix.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/cg_police_def_syllabus_2020.pdf
    • https://static.usrfiles.com/ugd/50c35f_6ad8daf6dc5746d28fd443f211c8b5a3.pdf
    • https://static.usrfiles.com/ugd/9c8fb9_1f62bbc037234a71a3b68eb0725a7439.pdf
    • https://static.usrfiles.com/ugd/f65518_adca17885d824a30820ed7042bdd6a51.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f3c9b208a314ac3b35194506fae5083.pdf
    • https://static.usrfiles.com/ugd/c7a620_b95ce934845b4307bba255ddde0142ef.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/kaplan_gre_analytical_writing.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/nogapamokaxew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/ribbon_in_the_sky_chords.pdf
    • https://cdn.shopify.com/s/files/1/0457/8652/9948/files/meme_generator_para_pc.pdf
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/vugadirisamoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/sasejelirunejokemitofum.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087c7.bin
7ef00f35ad130d25888479db564d9a9c2b1e9e2b59166a32af1baa709a786996
pdf-font-stream PDF embedded font (sfnt) at offset 0x87C7 3440 bytes
font_01_sfnt_off0000940f.bin
bfac9e76ceb687fe1c4881184010c6e3b2dfc2069d3b8fb9224d3013cc9e8563
pdf-font-stream PDF embedded font (sfnt) at offset 0x940F 5268 bytes
font_02_sfnt_off0000a5cc.bin
228c84ecadf81ebaffd995260c75825cdac6cc19718ef2090209de91846fd1af
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CC 15392 bytes
font_03_sfnt_off0000d480.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xD480 4324 bytes