Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb59be7ef2c0e74…

MALICIOUS

PDF

43.4 KB Created: 2020-08-16 00:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b59c7b849d07780d50acdd6f449dfa7e SHA-1: a2f38d18a2f964af311382076b817d28f0519aca SHA-256: fbb59be7ef2c0e74480f9ed03a6c6e5414e62c20ec334fc8b393ac3e3e413af5
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a large number of embedded external links. One of these links, 'https://ttraff.cc/pify?keyword=psychology+quotes+about+love+pdf', points to a known malicious redirector. The document body, though heavily corrupted, appears to contain text related to 'psychology quotes about love pdf', suggesting a lure to disguise the malicious intent. The presence of a link farm indicates a potential SEO poisoning or traffic redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=psychology+quotes+about+love+pdf
    • http://falib.newportpoetry.com/uploads/1/3/1/6/131637136/wozegimo_saweke.pdf
    • http://mowujiw.nsacchitella.studio/uploads/1/3/1/8/131856158/d8a0f9d52209d.pdf
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/nujigevutolinad.pdf
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/90630556425.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/ashampoo_burning_studio_18_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/fivuxujexetojuruxuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/carte_du_monde__imprimer_avec_nom_des_pays.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/glencoe_physics_study_guide_chapter_22.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/amu_11th_entrance_exam_answer_key_2018.pdf
    • https://cdn.shopify.com/s/files/1/0438/8664/1304/files/givarokipuwaxanapozis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/kanban_retrospective_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/free_depfile_login.pdf
    • https://cdn.shopify.com/s/files/1/0434/3922/7047/files/rebuvukozisirofigete.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/49132404126.pdf
    • https://cdn.shopify.com/s/files/1/0430/8303/8881/files/phonics_books_for_preschoolers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/95109265379.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_off00006919.bin
114671905dbfbb2ab118071c9fd6b83041bf4bef48333db2c8e0e564b3ae1b95
pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 5748 bytes
font_01_sfnt_off00007caa.bin
46d39c11a6b0fe323f8ba443fdf08ccabbb29bf192b94c71270249bfb968450f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAA 10804 bytes