Malicious PDF — malware analysis report

Static analysis result for SHA-256 422898fb8aa1fe37…

MALICIOUS

PDF

45.5 KB Created: 2020-08-21 12:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5374f8c603314f56ac48b90231e4c3ba SHA-1: b0101b9ce1b39bd8094ea60e9975e64eeddf110b SHA-256: 422898fb8aa1fe37dc9dd6189755ea75c4c37097be18c39e64d8de140e471166
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=play+store+latest+version+apk+mirror'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDF files, many hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the primary intent is to redirect users to potentially harmful 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.com/pify?keyword=play+store+latest+version+apk+mirror
    • http://files.mirandaski.com/uploads/1/3/1/4/131437926/nelazatuziwutex.pdf
    • http://files.brurosa.com/uploads/1/3/0/7/130775129/nagof_milerobowe_xezirujatiwep.pdf
    • http://files.newenglandismyhome.com/uploads/1/3/1/3/131383821/gizudufisimuzemovu.pdf
    • http://files.jparkercyber.net/uploads/1/3/0/7/130775249/ginanidolorefi_zutazavow_xexatoxadizat_pujugejemalix.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/zuxotirudemuvatabarelez.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/gamutufizedenozuzupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18187133080.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/5117126722.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/active_treatment_of_depression.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/fuzowawesot.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/iiaba_2018_market_share_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/94993863739.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/61961206798.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006826.bin
e3ce32b8ea61921d71481b638e971eb10eb4ec75bb53bc2be618e0a32bbd0b1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6826 4980 bytes
font_01_sfnt_off000078ff.bin
a202cb04cc453823705d1a265e2086c42a8d3e26f1f9b2dcbd7ff2a54d2eb5dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FF 9924 bytes
font_02_sfnt_off00009ae4.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE4 4324 bytes

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