Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97cfc649ee5ad63…

MALICIOUS

PDF

33.5 KB Created: 2020-08-26 21:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64452ef23644d7f9fa6a586b2c19ff83 SHA-1: 13ca2a089cbc5b18bd16fb09bddc4e69510d96f5 SHA-256: c97cfc649ee5ad6396c5a87a69092b0de85e1bc4efe3b85dc385564d734df53b
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, which is a common tactic for SEO poisoning and redirecting users to malicious sites. The primary malicious link identified is https://ttraff.ru/pify?keyword=sharp+atomic+weather+station+spc1005, which is flagged as a known malicious redirector. The document body itself is heavily obfuscated but contains references to the product name and the malicious URL.

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.ru/pify?keyword=sharp+atomic+weather+station+spc1005
    • http://dabif.anitasmithacupuncture.com/uploads/1/3/1/4/131438500/xamunaxoponuz.pdf
    • http://fodeti.nigelgorskiconsulting.co.uk/uploads/1/3/0/7/130775565/7805eb6002.pdf
    • http://fulej.genewhitacrecpa.com/uploads/1/3/2/3/132302939/9152a1eda5de.pdf
    • http://files.centraleuropeanstringquartet.com/uploads/1/3/0/8/130814492/labumu_vokovexevaz.pdf
    • http://files.29wildcats.com/uploads/1/3/0/9/130969680/kazazefobupudiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/wudoveni.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/19295978254.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3450/files/pefixabapomaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/zokasimawuzesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/jarozusud.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/human_the_killers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8547/0627/files/wwe2k_android_games_mob._org.pdf
    • https://cdn.shopify.com/s/files/1/0447/6777/2821/files/abaqus_theory_guide_6._14.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/daily_schedule_template_for_autism.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/fibemixometugejare.pdf
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/november_2018_calendar_template_portrait.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/mysql_5._5_ubuntu_16._04.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_off00004515.bin
aaf78f97e21d141a042407c90ed5968f2a4c262906fb1f3eb1b956626971ef3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4515 5652 bytes
font_01_sfnt_off00005841.bin
184246d394309306ce601fd4694dfcbd21704aa2816c072fd2c5c45a726a2d4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5841 9560 bytes