Malicious PDF — malware analysis report

Static analysis result for SHA-256 2883b08d7d7e67d0…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 20:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5189c3615724b00abba29b10282a45b0 SHA-1: 5982216ddb979a142ca79849523179fe2db2f408 SHA-256: 2883b08d7d7e67d0558753de1f3e3f528989af83529df52cfe9a9b0bc37b8899
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=building+permit+form+of+ownership'. This URL is presented within the document body, disguised as a 'building permit form of ownership', to entice users to click. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on shopify.com. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=building+permit+form+of+ownership
    • http://files.barefoottraveler.com/uploads/1/3/1/4/131453998/vovijano.pdf
    • http://files.cgburgin.com/uploads/1/3/1/1/131164519/ditefelumojeb_gojavanokuwupab_mopadefuzuf.pdf
    • http://files.shopidealbeauty.com/uploads/1/3/1/4/131437689/roxesux.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/dasupew.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/enuresis_nokturnal_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/gexawipasozuvujugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/autoimmunity_and_immunodeficiency.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/towunerowamakaze.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/how_to_plot_cdf_and_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/business_plan_for_food_restaurant.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/bms_system_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/ahron_bregman.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/65425228498.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopafomapezujiwowab.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_off00005ecf.bin
d38c2f01a1bb2726fb53a936cd7ab9a9e3cc47438248daeba0bb44cbe9dc53e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 5268 bytes
font_01_sfnt_off000070a1.bin
14dd09e433f6149d73d2cdf96f5fe3aef47d8a5b64e8babe980a3e38cce9cd12
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A1 10188 bytes
font_02_sfnt_off00009378.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9378 4324 bytes