Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dd3097731c89ac…

MALICIOUS

PDF

67.0 KB Created: 2020-08-07 07:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 655d03f33b9d8f37e5f085aabdd5aec5 SHA-1: 57dce781ae7779ab441033ae343ca15c8c3a1e7a SHA-256: 30dd3097731c89ac06e38afec1eb27c511d1e30e6462df11b88bbf6d419ab7b0
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=jurnal+anemia+pdf+2020`. This URL is likely used to redirect the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to other PDFs, suggesting a broad distribution or SEO poisoning tactic. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, further indicating a lure to external content.

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.cc/pify?keyword=jurnal+anemia+pdf+2020
    • http://files.palladinohomeinspection.com/uploads/1/3/1/3/131382346/tugazajofox-vedubanaz-fumeruni-vudegul.pdf
    • http://files.michelespies.com/uploads/1/3/0/7/130739704/wesuxexovawiko.pdf
    • http://files.mirrorcomics.com/uploads/1/3/2/6/132683087/zadorita-nagezabetufoga-mixaxubo.pdf
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdf
    • http://laxepi.elbowtree.com/uploads/1/3/1/1/131164250/4bf48.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokavurovapipemekimisam.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/41315389468.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/budgetary_policy.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/muzamase.pdf
    • https://cdn.shopify.com/s/files/1/0438/6557/1493/files/72220940033.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/58519770743.pdf
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/18900052007.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/87368598470.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/tamumewuluduri.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/wuvogamababobomeper.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_off0000bf75.bin
d1b676b41b0e95025dff71a20cc8f02f954d7feba6d6f1f9c7a5a1f72dd04cb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF75 5272 bytes
font_01_sfnt_off0000d151.bin
9c530be0cae899c501ef460f99711fea763f583b24e1027480d7b32a22d971b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD151 14764 bytes

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