Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a297bc9825b4f62…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 02:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2fc010bb465bdf1483d98248abe6240 SHA-1: 55d1b33a240e2605b9fb16d5ebaae59d77b99fa6 SHA-256: 3a297bc9825b4f6228dd1897eede88efaeef3a0c10f0169bffbfa2b382174cc9
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link directs to a known malicious redirector at ttraff.ru. This indicates a phishing or scam attempt designed to lead users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=kindle+paperwhite+compatible+file+formats
    • http://files.faithkingwriter.com/uploads/1/3/1/8/131871705/xagubemaxebipij_ruzebemib_donuwujunijaga_pumemudizomaf.pdf
    • http://geliwo.nmctkd.com/uploads/1/3/0/7/130776485/juriput.pdf
    • http://files.dcgrandprix.org/uploads/1/3/1/8/131871518/lafofivojemid_jamevuzifes_legokeguku.pdf
    • http://files.easel-lab-mondal.com/uploads/1/3/0/7/130739986/livitotaf.pdf
    • http://ruxobuzuf.cackc.org/uploads/1/3/0/7/130738824/nixafuvodopi_lilurizume_dewukosuta_rafisowibod.pdf
    • https://cdn.shopify.com/s/files/1/0440/3265/5525/files/vegotelufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5360/5273/files/54076344599.pdf
    • https://cdn.shopify.com/s/files/1/0438/9679/9384/files/an_introduction_to_underwater_acoustics_principles_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/fojaludatalujifutamowed.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/avi_mobile_movies_hd_quality_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7015/1061/files/nilunumidoxazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/84767590721.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/50390868291.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/cazadores_de_sombras_renacimiento_2_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/lokor.pdf
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/ryobi_40v_trimmer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/crack_serial_number_abbyy_transformer_3._0.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_off000067d0.bin
04de16a79fae774b53630a9ddca24359144385ecabc946bade1904de7a86697f
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 5596 bytes
font_01_sfnt_off00007ab2.bin
df9f6dec0ed4028182bcd3b833396a7384a61453e954e23c368f9ac4b1a1ef51
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB2 10084 bytes