Malicious PDF — malware analysis report

Static analysis result for SHA-256 b217a65a9f5b7338…

MALICIOUS

PDF

48.1 KB Created: 2020-08-14 09:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acf1ca77d878c6c03354422a9005b99 SHA-1: bf1190d0458c7a9b5a3f8e72680882085ac141cb SHA-256: b217a65a9f5b7338d397f81893fc6354fc003bd237545cdb9f70d53c149de22a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text 'Ba 1st year urdu book pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The presence of a malicious redirector strongly indicates an intent to deliver a secondary payload or conduct phishing.

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.com/wb?keyword=ba%201st%20year%20urdu%20book%20pdf
    • http://files.greenbrierconcours.com/uploads/1/3/2/7/132741334/6091212.pdf
    • http://files.bali-jaladara.org/uploads/1/3/1/1/131163635/0d3cc7c5.pdf
    • http://lifoji.louiseashcroft.org/uploads/1/3/1/0/131070420/278f865510.pdf
    • http://files.coldcomfortswhistler.com/uploads/1/3/2/6/132682113/texemekon.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9066/files/wemos_d1_mini_pro.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/gobazonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/nimoniloxajoxekadesoma.pdf
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/77692442269.pdf
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/95392747409.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/fuwidawujawegadomalit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/66194984201.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/jevadagexilivegijifi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/xepejomixexuvifunoka.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/cen_01_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0736/7592/files/jowavajefigifevuvun.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/98132854252.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/medical_medium_celery_juice.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_off000064fa.bin
f1159fdc2f91af7dcb93cc2605d3f8381688e52af2e5399dbaaf917366f91290
pdf-font-stream PDF embedded font (sfnt) at offset 0x64FA 5136 bytes
font_01_sfnt_off0000768c.bin
34c2bbf47371c6700f1d571430ec3b24c682facceb72a590d4de2c2a1fc4b271
pdf-font-stream PDF embedded font (sfnt) at offset 0x768C 15224 bytes
font_02_sfnt_off0000a58a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA58A 4324 bytes