Malicious PDF — malware analysis report

Static analysis result for SHA-256 305d889c39d2bdb6…

MALICIOUS

PDF

50.5 KB Created: 2020-08-24 21:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d4e565b174f2923ed3f7af5b715266 SHA-1: adebb599986d867eb2816298e6a8b9eb91eb37f6 SHA-256: 305d889c39d2bdb6417bcfd5af01165b41fb678fc777091fe2231dbfc71e9524
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious due to containing a large number of external links, many pointing to Shopify-hosted PDFs, a technique often used for SEO poisoning or to obscure malicious redirects. One specific URL, https://ttraff.com/pify?keyword=remove+bloatware+android+samsung, is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL, suggesting a lure related to 'removing bloatware'. No scripts were extracted, but the PDF structure and linked URLs indicate a likely phishing or scam attempt.

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.com/pify?keyword=remove+bloatware+android+samsung
    • http://files.armaeroconsultants.com/uploads/1/3/0/7/130776529/7850220.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/79705077329.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/25741079830.pdf
    • https://cdn.shopify.com/s/files/1/0431/4637/9426/files/converting_among_metric_units_worksheet_answers_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/barbarian_totem_warrior_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/7428704825.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/89093380097.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/desire_lyrics_u2.pdf
    • https://cdn.shopify.com/s/files/1/0429/9646/5823/files/56666994505.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/kizuxej.pdf
    • https://cdn.shopify.com/s/files/1/0432/7453/5067/files/91572012888.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/tamil_news_paper_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/moloxewenosagadap.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006856.bin
4455747fda9ac97410526ac3fee3ca643cc61cb592146befb7df79af2604d95b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6856 6424 bytes
font_01_sfnt_off00007838.bin
3b52fc97ab0053818138dca274a0ce416468be7d5e2ad1f629637eee841be388
pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 5324 bytes
font_02_sfnt_off00008a4c.bin
d25efb29304cccf15952363377952ac1907ed427264b280ef33d0ec3d2801509
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4C 10748 bytes
font_03_sfnt_off0000aec8.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEC8 4324 bytes