Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4b920717e7967d…

MALICIOUS

PDF

39.8 KB Created: 2020-09-01 20:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ef73f53bbd9337874975cf05cebb64 SHA-1: 921b8b18fc28aaa43163945282e4bceedaec3e7d SHA-256: 4e4b920717e7967d488fae4c2d190f1ca6f7b9ff94b9260ba108c88871cd59fb
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=alcatel+lucent+4028+user+guide'. Additionally, it exhibits a PDF link farm pattern, embedding numerous external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0433/9417/1036/files/akreditasi_sistem_informasi_ubm.pdf'. The document body, though partially garbled, includes text related to 'Alcatel lucent 4028 user guide', suggesting a lure to disguise the malicious intent. The presence of a callback lure heuristic further supports a phishing or scam objective.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.me/wix?keyword=alcatel+lucent+4028+user+guide
    • https://cdn.shopify.com/s/files/1/0433/9417/1036/files/akreditasi_sistem_informasi_ubm.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/1815523712.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/pemogapodadotekotavozono.pdf
    • https://static.usrfiles.com/ugd/b8c837_7dc2931988214758ae7ed0004285d4b9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/52353244822.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/our_god_is_an_awesome_god_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/dovekunotis.pdf
    • https://cdn.shopify.com/s/files/1/0436/0817/8845/files/43388150079.pdf
    • https://cdn.shopify.com/s/files/1/0457/8970/8444/files/courier_address_format_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/bemagepinape.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/90253373125.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_off00005b38.bin
e7f1d60a4596024946f18490d630582fb4b1e393f300253bd404a8e1f6bab663		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B38 5652 bytes
font_01_sfnt_off00006e88.bin
be07783ccf849f9d87759c4ebddf22dd51c009a23a64a6a28f0207d55746fe2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E88 10172 bytes

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