Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56e32a19f3879d7…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 03:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffc7968a93a7625c1d5e1f349b6ff8e3 SHA-1: 32ffc23e64b56329381fd134e3baaa436e6516ea SHA-256: a56e32a19f3879d7fe57b19e3005c840456a93b5c30ee60e34306ebb5b416a4a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that are part of a link farm, with one primary link identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to PDF downloads and the malicious URL. The primary intent appears to be luring users to click the malicious link, likely leading to further compromise.

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.com/pify?keyword=learning+strategies+in+second+language+acquisition+pdf+download
    • http://files.inspiredimagecreations.com/uploads/1/3/0/7/130775867/pojuweda-lazepikesub.pdf
    • http://files.scatennis.com/uploads/1/3/1/8/131856456/tirozowawosofuxezoj.pdf
    • http://files.district13masons.org/uploads/1/3/1/1/131164198/2533956.pdf
    • http://lezegikig.cikgusaffuan.com/uploads/1/3/0/7/130775734/6b62489fb9.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/jisarejit.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/foxunikelemir.pdf
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/bumekurugug.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/26129805466.pdf
    • https://cdn.shopify.com/s/files/1/0437/2037/6474/files/belobobomitudoxuba.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/foliduges.pdf
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/cell_phone_jammer_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/sigezizamedumuli.pdf
    • https://cdn.shopify.com/s/files/1/0438/2579/1138/files/pengertian_organel_sel.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3770/files/vivifoposefebenediwiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/xalunenovurimana.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e4.bin
00db30523f67bd4daaae56f51445a886ad7eaf57ab7075247dc8516b34e4feef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E4 5480 bytes
font_01_sfnt_off0000869e.bin
cba3c9c99cef5b7533db87dec11dd3f9a23c194f0e81d5a9706d32ac50f5cb19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x869E 10136 bytes

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