Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd112997d36519c…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 19:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47e23cc087375a8912677f15b68d4563 SHA-1: 0c780f477d8cd4d031513ffb36f3c7c5755c5ef5 SHA-256: 4bd112997d36519cc510c49ca029f01fac641fd73724fd854c52e0249cc152e5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=asus+drivers+windows+8.+1'. The document body, though heavily obfuscated, contains a reference to this URL and the lure text 'Asus drivers windows 8. 1'. This suggests a phishing attempt to redirect users to malicious infrastructure.

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/pify?keyword=asus+drivers+windows+8.+1
    • http://bimome.minxylydia.com/uploads/1/3/0/7/130775734/godulunulipigojugem.pdf
    • http://loluze.diversifiedfixture.com/uploads/1/3/1/3/131383297/nofukitave-daloxavurek-jomebewepofil.pdf
    • http://files.iyengaryogadetroit.com/uploads/1/3/0/8/130813526/504411cc83c.pdf
    • http://files.christinevilla.com/uploads/1/3/1/4/131437491/guxafokoluj-piwuxaduwuboz-xomosavuduz.pdf
    • http://files.christinevilla.com/uploads/1/3/1/4/131437491/guxafokoluj-piw
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/7176616535.pdf
    • https://cdn.shopify.com/s/files/1/0450/6163/6259/files/caste_category_list_in_bihar.pdf
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/how_to_uninstall_node.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4471/files/jarunulirunage.pdf
    • https://cdn.shopify.com/s/files/1/0432/9291/7924/files/lonob.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/merge_intervals_leetcode.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/50545543787.pdf
    • https://cdn.shopify.com/s/files/1/0435/3828/4699/files/65193559149.pdf
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/bikifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/award_certificate_template_printable_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/jafidowozorukizoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.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_off00006b68.bin
577a24b6ebe1f2f25caf3eaf64b32db778456b7ddf7aaf2ed58ac37409233f73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B68 4996 bytes
font_01_sfnt_off00007c9a.bin
e408014a262bb66fd82759005560515b8236ad05594a8a571b71dd919c05a9cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9A 12768 bytes

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