Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19509f0fc9094db…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 19:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: faa6edbab7199a933d7bc5ac31edf571 SHA-1: 820caa6cc52b4e5c268030691750a248173f7e8a SHA-256: f19509f0fc9094dbe0ac3b5ec08a5fda4ed1f5fe86e53277d280518b341942c3
140 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body and heuristics suggest a callback phishing or tech-support scam pretext, using a 'consumer reporting agency credit dispute' lure. The primary malicious IOC is the redirector URL, which likely leads to further stages of the 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.
  • 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.com/pify?keyword=consumer+reporting+agency+credit+dispute
    • http://files.skincarebyjacquie.com/uploads/1/3/2/6/132681885/8378760.pdf
    • http://files.dhyanahealing.com/uploads/1/3/1/4/131453005/7529557.pdf
    • http://files.craiglistschryslerkcar.org/uploads/1/3/0/7/130776111/tuvasaso_janakawabobed_wavepajerenala.pdf
    • http://tebik.jjsdka.org/uploads/1/3/1/4/131454178/nonesomed-zudegutonat.pdf
    • http://xebevaje.rorymichelle.com/uploads/1/3/0/9/130969191/ririgamuse.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/mefafidemumawaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/14680959053.pdf
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/define_economic_planning.pdf
    • https://cdn.shopify.com/s/files/1/0433/4626/4213/files/patifibinobamezikugalim.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3932/files/the_armour_of_god_priscilla_shirer.pdf
    • https://cdn.shopify.com/s/files/1/0435/3176/3864/files/vebapenidij.pdf
    • https://cdn.shopify.com/s/files/1/0436/2017/1936/files/16156041932.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/working_of_automated_teller_machine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/21252382665.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/jixozitu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/gujigenasugap.pdf
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/26629570218.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5174/files/thiruppavai_telugu.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_off000061fc.bin
4537cfd38d730150fbd34e30011b7c07cb8b6c6b39fe33d846b9ad588fd0ea63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 5368 bytes
font_01_sfnt_off00007429.bin
d68beb2cb4d3a1589f466f31ebc1ace9cb2994003384eb2fe8f7eb89d5bee966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 10080 bytes
font_02_sfnt_off00009696.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9696 4324 bytes

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