Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c87bcb8ddfc08d0…

MALICIOUS

PDF

58.8 KB Created: 2020-08-28 01:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dc7fb3e47ec3a3b3536ee00b6886957 SHA-1: bcbf75dd29a704bd9c6b2a24697afe3d2282a76e SHA-256: 6c87bcb8ddfc08d03c4e087e7ae6d8c660d26eaadeb3fff79db90340d75284dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=royal+caribbean+recipe+book+pdf, which is likely used to distribute further malware or phishing content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=royal+caribbean+recipe+book+pdf
    • http://weturod.msmorales-chemistry411.com/uploads/1/3/0/7/130775732/naxavuroweresabox.pdf
    • http://files.progressiveair.org/uploads/1/3/1/3/131384429/2848906.pdf
    • http://nilot.suntreehealingarts.com/uploads/1/3/1/3/131381435/d14273e68.pdf
    • http://files.angelinmyear.com/uploads/1/3/0/9/130969748/3169429.pdf
    • http://files.socalfcboosters.org/uploads/1/3/1/8/131856904/jumupuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0462/6766/2490/files/vemasabur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/54491116077.pdf
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/aiims_toll_free_no_for_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/1842/8326/files/mipigowanalomasuxijezofi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1601/9355/files/pibibepusokilit.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1054/files/freezing_point_depression_lab_report_answers.pdf
    • https://cdn.shopify.com/s/files/1/0452/1476/1120/files/all_paper_size.pdf
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/29819237669.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1261/files/argumentative_essay_outline_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0449/3423/4280/files/anthracycline_in_breast_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/jetutosomoxoxababusibux.pdf
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/sowovi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a83.bin
6859ac1178dc82d360c7b535dddfee9b66afa0737f0a87614db9b26720571d6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A83 4992 bytes
font_01_sfnt_off0000ab80.bin
3172602f0e5f33dd10de6fb4e973168f55be4027b7f2f590f06d24d9a6d0e765		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB80 10604 bytes
font_02_sfnt_off0000cfd5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD5 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.