Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ef97136136426e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 03:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d7a60ca5c1e7508cec5a2637dc58864 SHA-1: 41ad7c2b17992646e489694988220536af9cd49e SHA-256: 15ef97136136426ef00be5e557b4bf786a393a3037d28b5d7d8976837e262433
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, ttraff.com, which is flagged as malicious and associated with a Java update lure. The document also exhibits characteristics of a link farm, with numerous embedded links to Shopify-hosted PDFs, suggesting a broad distribution attempt. While no scripts were directly extracted, the presence of embedded URLs and the malicious redirector strongly indicate an attempt to lead the user to a malicious download or exploit. The ML classifier also strongly flagged this PDF as malicious.

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=java+jre+6+update+45
    • http://files.tellhisstory.org/uploads/1/3/1/3/131380146/bujimuwigon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/atlas_copco_parts_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/lemidilat.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/gerunds_and_infinitives_worksheets_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/sejarah_bani_umayyah.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/vevamikeko.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/asignatura_estatal_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/cattell_iii_b_test.pdf
    • https://cdn.shopify.com/s/files/1/0430/5063/1319/files/chakrir_dak_download.pdf
    • https://cdn.shopify.com/s/files/1/0449/6611/7544/files/ledajozunaxumomesif.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/mercury_outboard_manual_by_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/zatorixokefizinosilutol.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_off0000608f.bin
f5d6be637b81e26f45933026063354ace1b1311324ebf72757556ff182051f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 4852 bytes
font_01_sfnt_off0000712e.bin
31dfc0b2d4278c9f946b0a410aeb74ec921e4edcbd3ede74dffbd99de4e64b0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712E 10312 bytes
font_02_sfnt_off00009472.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9472 4324 bytes

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