Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6074139d4c25cf7…

MALICIOUS

PDF

45.0 KB Created: 2020-08-23 10:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4b2a515b033a231f22783c1806278d8 SHA-1: 11ddf5cd1c11a2dac4ca6fc85a3ba25724a0e805 SHA-256: e6074139d4c25cf7544bf17abc0fd446e503b55946a2995906fe9dffc4bd1ebc
152 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 'https://ttraff.cc/pify?keyword=ted+wells+report'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to distribute content or mask malicious activity. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector URL is sufficient to infer a phishing or malware delivery attempt.

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=ted+wells+report
    • http://devit.milesindustriesnz.com/uploads/1/3/1/4/131453574/fujatedo_setikudenikem.pdf
    • http://jevage.bigbucksobx.com/uploads/1/3/1/3/131379362/4735203.pdf
    • http://sasopol.melvintan.me/uploads/1/3/2/6/132681337/sufibob_daneniju.pdf
    • http://sobit.thebrooklyngreenschool.com/uploads/1/3/1/0/131070761/vepoku-sejitoba-nasogan.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/67807873683.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/facebook_lite_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/9986/2680/files/nuforulabi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/ebay._co._uk_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5268/files/10963171390.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/corrugated_steel_sheet_weight.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2213/files/vebomonaruvemubetabobejo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7478/9281/files/82054071805.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5970/files/11135978401.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/sairat_full_movie_link.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0558/files/59254757091.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_off00007310.bin
62442ee80c1d65f69ab3667438eeb42f04d7b9667a14d6122357b1f99879be47
pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 4784 bytes
font_01_sfnt_off00008377.bin
d6d8607fabaccd7992c23faed85dde76a6d7c70a1e1f85b5e3b33c0dfc2f43ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x8377 10632 bytes