Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ecd2ae22d82f8e4…

MALICIOUS

PDF

42.2 KB Created: 2020-08-25 01:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7e6bb78417c35abcb9fe4cb294a07d3 SHA-1: 78e2aa6238967ef65def8e653aa1f7dd2be3d9d4 SHA-256: 8ecd2ae22d82f8e4039b1cae053c6a6eca2788b653342e9d9c8cff5640de6082
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious link, 'https://ttraff.com/pify?keyword=love+breakup+hd+images', suggests a redirection to potentially malicious content. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and a reference to the ttraff.com URL, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=love+breakup+hd+images
    • http://files.abqmobilenotary.com/uploads/1/3/1/4/131437604/6da8ebd7.pdf
    • http://files.thehousefixers.com/uploads/1/3/0/8/130814716/821974.pdf
    • http://jukifogi.empoweredforlife.net/uploads/1/3/1/3/131378776/gowituroxo_jumirobup.pdf
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/access_runtime_2016_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/89054136965.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/22872493668.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1292/files/sagagebi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/eva_luna_isabel_allende_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/neramixawaguzowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdf
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/adobe_photoshop_2020_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/medical_leave_of_absence_letter_format.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_off000066c5.bin
612faf37ec297ecf7074ce47c44c34d30dd6fd2ce84132d491d9429db8bfdd88
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5544 bytes
font_01_sfnt_off00007983.bin
867203b4da06f5047ca651eb0d2aa6b72ddb27fecfc8f9bdbcd49cf503979ece
pdf-font-stream PDF embedded font (sfnt) at offset 0x7983 10240 bytes