Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75592e078028f15…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 19:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b756e4d6b86082906783ea6b144c32cf SHA-1: 6bf461f06859ffef3e5149a145ddd344483fa169 SHA-256: e75592e078028f15d27604bc33edd328a0cffcb970bca39f36de17f0664b61ed
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a phishing or scam attempt where the user is tricked into clicking the malicious link, likely to download further malware or be directed to a fraudulent site. The ML classifier also strongly flagged this PDF as malicious.

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=edscratch+teacher%2527+s+guide
    • http://files.helpinghandsunited.com.au/uploads/1/3/0/7/130738704/wesuvebati.pdf
    • http://files.jetsesther.com/uploads/1/3/1/4/131455956/ripubis.pdf
    • http://files.mubetaphimilitaryfraternity.org/uploads/1/3/0/8/130814601/1d7ea42acc.pdf
    • http://pekimuve.sstherapyandconsulting.com/uploads/1/3/1/4/131482975/mejapabagob.pdf
    • http://files.mtbo-sui.com/uploads/1/3/1/4/131437873/6e8dd7e6cb971.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/cbse_12_board_exam_2020_time_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/rearrange_sentences_with_answers_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/zenith_remote_controls.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/xofefifujenibefuvajoxuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/bajaj_allianz_health_insurance_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/37400624384.pdf
    • https://cdn.shopify.com/s/files/1/0434/8500/3926/files/cds_2_2018_answer_key_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/qual_o_significado_de_movimento_uniforme.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/makimiwadobadudisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/13857073149.pdf
    • https://cdn.shopify.com/s/files/1/0437/6576/0151/files/kaberiwuziz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/netaranojazexinadorokama.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/can_t_stop_the_feeling_zumba.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_off00006f48.bin
e83dcb85b9a95fa5173c05040fda97e747530d981fd3b996e5cb00916ba8cc54
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 5160 bytes
font_01_sfnt_off000080d9.bin
820dfd5a3ffee2862d10a40a37b5e4f293038d1b36a962ec0fc7cff6ae66a349
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 9832 bytes