Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f1ce45ac827c5f7…

MALICIOUS

PDF

45.3 KB Created: 2020-08-14 08:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 758860dd43ac15c33e49b8a29aa44257 SHA-1: 58558d936e3c5830c798234ca20dc6a41afbce04 SHA-256: 8f1ce45ac827c5f7e7d78bbc42db442ddc9a3ef06518a42c023dc0c1d818967a
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, characteristic of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body contains garbled text and a seemingly innocuous title, but the presence of the malicious redirector and the link farm strongly suggests a phishing or malware distribution attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=weather+report+mumbai+santacruz
    • http://fenasemo.pabloguarda.com/uploads/1/3/1/0/131070993/zumatiburuxe_refidim_turomegixib_novefixitanazo.pdf
    • http://files.accuwear.ca/uploads/1/3/1/4/131437864/nipupowituvibokewodo.pdf
    • http://files.quietcountryestates.net/uploads/1/3/1/4/131407281/fotinomobej-tujofeken.pdf
    • http://files.triplejackproductions.com/uploads/1/3/0/9/130969600/70a9b67.pdf
    • http://files.edgybynatureproducts.com/uploads/1/3/2/7/132740415/kisubab.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/fomatonoxowojoranod.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/xegavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0433/6454/8762/files/positive_and_negative_effects_of_mobile_phones_on_students.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8726/files/tneb_assistant_engineer_electrical_previous_question_papers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/petamowuzomowip.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/nojukonakixapapudid.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/zawokoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/lolividujojarafom.pdf
    • https://cdn.shopify.com/s/files/1/0437/6707/0877/files/bohemian_rhapsody_violin_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/notivalapipugomimikopivez.pdf
    • https://cdn.shopify.com/s/files/1/0431/3959/6454/files/viwasifumawasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/52041544871.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/23693338100.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/
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/520415

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006756.bin
8e228e493b0f259ca4d82f86a704b10a0acc1741c2ee5f468f4509c2b053ba19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 5344 bytes
font_01_sfnt_off00007966.bin
a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7966 1936 bytes
font_02_sfnt_off000082ab.bin
fb87eba6dd73fe50f0d3a12c5239a5d812e052b81f09121499d501532feac098		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AB 10988 bytes

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