Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18eb71971b05794…

MALICIOUS

PDF

80.2 KB Created: 2020-08-10 05:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2478a36e2dfcf10ed60cb3f89aed494e SHA-1: 50d1eb9efe962af456a5606319f2b17612de8c4d SHA-256: b18eb71971b0579425715d14d27276896f794d22311dac41ada05aba2e1d6d6b
170 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body and heuristics indicate an advance-fee scam lure, disguised as a downloadable academic paper. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alagappan+clinical+medicine+5th+edition+pdf+download
    • http://fujok.annawitte.org/uploads/1/3/0/9/130969057/cd3126597.pdf
    • http://gedeze.kimbarrystudio.com/uploads/1/3/0/7/130775413/3655507.pdf
    • http://lozolexa.davideagle.ca/uploads/1/3/1/8/131857631/ninizoze_sisajugabetide.pdf
    • http://files.elizabethkburns.com/uploads/1/3/1/4/131453193/jatujubifonivawutire.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/worldmark_encyclopedia_of_cultures_and_daily_life.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/msds_acido_citrico.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/20234257046.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/xomowetowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/practice_act_tests.pdf
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/44759000332.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/vuzusakobejijaxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/82125551064.pdf
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/45810417485.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/zotabiwegatafexalufow.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/aldehidos_y_cetonas_quimica_organica.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_off0000f527.bin
adf046b125dc2f31152921a63ae7f4d7db8297a5e8389479a2657ecb9c7676d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF527 5500 bytes
font_01_sfnt_off000107d9.bin
f2b675dbbf60d44ca9ec2d805a476f299869b64001023540f5223a210d1b2fba
pdf-font-stream PDF embedded font (sfnt) at offset 0x107D9 13496 bytes