Malicious PDF — malware analysis report

Static analysis result for SHA-256 52aaf6ce52c302e7…

MALICIOUS

PDF

43.0 KB Created: 2020-08-18 20:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90737577db4a0867fe0edd874bea3acc SHA-1: b678cac366930f82c1b01e17c15f56ff95d046fc SHA-256: 52aaf6ce52c302e71a1d98f6c4f2986d4a531358e1155842ad8e856a0bad3963
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or further malware delivery.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=baby+blue+spruce+tree+information
    • http://files.peterclarkmd.com/uploads/1/3/1/0/131070979/sinutefe_vikar.pdf
    • http://juxupotor.illinoisonlinehighschool.org/uploads/1/3/0/8/130874524/702347147.pdf
    • http://files.morningwoodaz.com/uploads/1/3/0/9/130969389/8141209.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/kaluzujuweneda.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/sumuzelekojeputad.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3763/files/low_tide_sanibel.pdf
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/surgery_book_bailey_and_love.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/52890966820.pdf
    • https://cdn.shopify.com/s/files/1/0434/1714/1415/files/angular_2_window.pdf
    • https://cdn.shopify.com/s/files/1/0448/9697/7051/files/alphabetical_list_of_us_states.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/niterunupeniwopozaguri.pdf
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/lipolo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/24810054476.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6615/files/dowazinatazomimu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7480/files/les_accords_jazz_guitare.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_off000067cf.bin
d13584a32499566543afe738e26fb596447f5b0780da0820665e7336dfd622a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x67CF 5452 bytes
font_01_sfnt_off00007a44.bin
eaffff05de5bb4c48a68d81ffa46ec365bdcad931d786e551e4f6686ac03f017
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A44 10672 bytes