Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7474a1e49fc8ca…

MALICIOUS

PDF

48.7 KB Created: 2020-08-12 06:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cef6f38a2c3d3eafe32d628e9c88bec SHA-1: 365285ab434e3175ce5931d3da619146b71d7124 SHA-256: 9f7474a1e49fc8ca2fa0ee3ca79bb5d663cfaf90d457ae9c1167ae60f302331b
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=janet+belsky+experiencing+the+lifespan+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. The presence of a large number of external PDF links, as flagged by PDF_SEO_LINK_FARM, further supports the attack pattern of using link farms for obfuscation or SEO poisoning to lure victims. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=janet+belsky+experiencing+the+lifespan+pdf
    • http://files.executive-advocate.com/uploads/1/3/1/3/131379321/a73eb63e8d82.pdf
    • http://files.thefutureofindiana.org/uploads/1/3/1/4/131407445/wisefamiwo_bovupefimam_vojateril_foder.pdf
    • http://files.all-about-abbie.com/uploads/1/3/1/4/131438891/jujuxiziliwadatopag.pdf
    • http://files.photolenka.com/uploads/1/3/0/7/130739892/bubeju-mavewita-lefevebe-dugajemomigexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6067/files/71365414466.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/17527600895.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/banow.pdf
    • https://cdn.shopify.com/s/files/1/0451/2251/9205/files/panduan_belajar_bahasa_mandarin.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2673/files/39994550127.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/tikutijalazo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6666/8694/files/nukobiwevawifaxafisago.pdf
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/kujolonotowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9230/3254/files/napijutib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/7953571665.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
stream_005_off00009a0d.bin
ab969b5af7b01d343ac0c3b64dbdfa17f213a41e7806b784a14489e73ce9294c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9A0D 17860 bytes
font_00_sfnt_off000063a3.bin
3d9c596a11bef9d43177767684e9f2b8a77e696a6c095d5ce1b3437175bba2e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 5780 bytes
font_01_sfnt_off00007746.bin
afd8c6631082da3234d86e77f8e4f4afcef28c096c9620f0398b50d5bc1de3d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7746 10100 bytes