Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7adb302da0a0a9…

MALICIOUS

PDF

37.3 KB Created: 2020-09-02 06:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92891d183b521a91dd5fc2125063a2db SHA-1: 28ffed94ac454bee9831d8363b88ae8fbd9b928a SHA-256: 2f7adb302da0a0a9500c6cf822a55aec0ccbc187e647243117f4340eab9e9f0b
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and references to parts manuals, likely a lure to encourage clicks. The presence of numerous Shopify links suggests an attempt to blend malicious content with seemingly benign resources. The heuristic 'SE_URGENCY_LURE' further supports the social engineering aspect of this attack.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/wix?keyword=aisle+master+44se+parts+manual
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/biludarekedagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/tubevabu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0438/0111/6833/files/55461889591.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/napupemuro.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/symbolab_pro_apk_onhax.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/28958621640.pdf
    • https://static.usrfiles.com/ugd/173616_48f4f08f27d94bff88eab76d95496dfd.pdf
    • https://static.usrfiles.com/ugd/c722c2_a06a0406e9f045859246a6361cdf0d05.pdf
    • https://static.usrfiles.com/ugd/9904c2_638197d2b6b94f26bfccbce88364bae8.pdf
    • https://cdn.shopify.com/s/files/1/0431/4857/4884/files/sigak.pdf
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/working_capital_management_formula.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/1475658182.pdf
    • https://cdn.shopify.com/s/files/1/0431/9333/5970/files/41677127690.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/bukukojapetasujekafugufet.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_off0000547c.bin
024b9efa4ab6425e83c0f89c1955c4f20460e7bf0d0dbae921d866cb9006694b
pdf-font-stream PDF embedded font (sfnt) at offset 0x547C 5040 bytes
font_01_sfnt_off0000658c.bin
5e567d853824671185f2162f21ee333b30e941e032cc856d46a82df1ad2ecaa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 10236 bytes