Malicious PDF — malware analysis report

Static analysis result for SHA-256 58065af39a9f763d…

MALICIOUS

PDF

43.9 KB Created: 2020-08-05 03:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863448293e40a61de4dd33569c8b81c7 SHA-1: 5af3725905d7bc098d4a91b5e8d75ed8c7344980 SHA-256: 58065af39a9f763df1ccc7c65a86453783be23aa8ef6a8e91bc1bc994e5a95ec
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=anlage+sv+pdf'. Another critical heuristic identified a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0433/2866/7798/files/.pdf' being the first URL in this farm. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site.

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=anlage+sv+pdf
    • http://files.ministryinmedicine.com/uploads/1/3/1/4/131436981/nulazelanarojomivalu.pdf
    • http://files.wtho.org.nz/uploads/1/3/1/0/131070378/751255d4081.pdf
    • http://files.aerialarthouse.com/uploads/1/3/2/8/132814505/2665326.pdf
    • https://cdn.shopify.com/s/files/1/0433/2866/7798/files/.pdf
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/fikasiledukuxevokewesami.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/2522174640.pdf
    • https://cdn.shopify.com/s/files/1/0434/0803/1893/files/buronikulomevijanowof.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5501/files/manual_j_load_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/kimodinabasewoko.pdf
    • https://cdn.shopify.com/s/files/1/0430/5738/1530/files/bepojug.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/taxufenukogedigokibelubu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/wezimovorisatuserevasawuw.pdf
    • https://cdn.shopify.com/s/files/1/0449/3528/2856/files/exit_hesi_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/26598052538.pdf
    • https://cdn.shopify.com/s/files/1/0431/2206/5557/files/barusegatituropewef.pdf
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/gabekafenilifi.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_off00006004.bin
408745e8f55cd3bd9d4fe9ea546ca96a0df71014da13680f64a052b3ca5f1508
pdf-font-stream PDF embedded font (sfnt) at offset 0x6004 4712 bytes
font_01_sfnt_off00007016.bin
755b07b649b36481ad71121cabf7e063a4ebf6333de255a83ff7996bb52ea8e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 11200 bytes
font_02_sfnt_off000094fa.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x94FA 4324 bytes