Malicious PDF — malware analysis report

Static analysis result for SHA-256 976da4abb3673050…

MALICIOUS

PDF

65.6 KB Created: 2020-08-25 17:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9858fe8c8f96bf1083c37d5054082a45 SHA-1: 7179d3c7bea663a11da658e02febe2cbaa6f9b74 SHA-256: 976da4abb3673050c9a290a35a69613a884302b81630a513a8880b2399aa0696
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.cc/pify?keyword=antenna+parameters+and+their+effects+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to lure users through search engines and then redirect them to malicious content or phishing pages. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=antenna+parameters+and+their+effects+pdf
    • http://xixamiz.c-nrl.com/uploads/1/3/1/4/131437502/petuvubokiladu.pdf
    • http://files.allenhuang.org/uploads/1/3/1/3/131380052/5e13bdda91e1.pdf
    • http://lijan.capitaljumpers.com/uploads/1/3/1/8/131871787/xenelimur_gixopunep_monaxuxiwed.pdf
    • http://files.portlandmainemassage.net/uploads/1/3/1/8/131856995/lixajidavigamo-wutereta-zurepejobelur.pdf
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8970/files/nekitere.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/jafanawovu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/python_bottle_template_examples.pdf
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/78971745528.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/40700940441.pdf
    • https://cdn.shopify.com/s/files/1/0432/4157/0459/files/pidovigapedizonakekivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.pdf
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/jijivomarosadoserunokujap.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/89564053560.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/22394162669.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_off00009414.bin
c3de73e46582763b61d9274f14016eae0bf7777dda3b98e4c1b5e66231269cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9414 5032 bytes
font_01_sfnt_off0000a4f4.bin
42e1bed3db78aa87d83d623b5fa927b9d6e9a21ec2ee0efe03d273672ddf5dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F4 14820 bytes
font_02_sfnt_off0000d516.bin
13af90432f981cdf07d2fe7485c35c92b9d7264bbf1d6bcd6a939c2b2fbe7217		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD516 16320 bytes
font_03_sfnt_off0000ead9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 4324 bytes

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