Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba68757b49b7ec7…

MALICIOUS

PDF

66.4 KB Created: 2020-08-06 01:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6848d231975e2b47588b1df8a349e01 SHA-1: a08530352b741d4e1542d31aafc170c3783e3dbe SHA-256: dba68757b49b7ec7cc1e9cc06b0cbc50227d68392246e010b29286df2140b169
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The embedded URL 'https://ttraff.com/pify?keyword=basic+arrhythmia+pdf' is the primary indicator of a malicious redirector designed to lure users to a potentially harmful site.

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=basic+arrhythmia+pdf
    • http://files.roryryanarchitects.com/uploads/1/3/0/9/130969390/ff5288ea.pdf
    • http://files.gradeseven.nestmusic.org/uploads/1/3/2/6/132681891/zezipipit.pdf
    • http://files.vigocountycib.com/uploads/1/3/1/6/131637308/164c2.pdf
    • http://files.popiconsblog.com/uploads/1/3/1/3/131398059/sazuneve.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4661/files/83975538449.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/what_is_the_iphone_model_a.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/kapebebesebedutudov.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/64987350895.pdf
    • https://cdn.shopify.com/s/files/1/0431/3939/9842/files/16161402780.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/71697375233.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/bitasir.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/opencl_vs_cuda.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/15541321808.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/skip_bayless_undisputed_podcast.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/jiwujifa.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_off0000c726.bin
4ccd7c6d7138d00573d5e534e0ce06f53adadbd5660331e476706efd6bca59df
pdf-font-stream PDF embedded font (sfnt) at offset 0xC726 5516 bytes
font_01_sfnt_off0000d9c3.bin
70e192e53367d2990499db2008c60529b519c49f2474adcd10ad961fa73e7b6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C3 10224 bytes