Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41bc3d3934e6f04…

MALICIOUS

PDF

40.9 KB Created: 2020-08-20 08:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07400347c072a663b5f9138d3a31b474 SHA-1: 28cdfccd884da3019e2f731ef2e59931a1f1b890 SHA-256: a41bc3d3934e6f04a137d9d510f974e239b59723501f044a8d5f55dab171e12d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'Affinity designer ipad guidelines' and the malicious URL itself. This suggests a phishing or scam attempt, likely aiming to redirect the user to a malicious site.

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=affinity+designer+ipad+guidelines
    • http://files.learnwithmmg.com/uploads/1/3/2/8/132814427/xoxuvugekot_sojitide_wavejopibu_wurixazofawik.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/junekexedazo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/zatikejir.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/vatizajovofoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/dufewubesedajituwaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/40344332205.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/add_text_to_adobe_reader_9.pdf
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/reading_comprehension_past_simple_and_continuous.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/14176488971.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/mubagaxovovakeparume.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/josujemilip.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/51811087614.pdf
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/jorutenemameronoto.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/lululu.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_off00006144.bin
5a3f2694483d977e66aaf7a53b45522a22795de435d6eed5c485164c122bd903		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 5300 bytes
font_01_sfnt_off00007360.bin
870d4a3c172c05fc012453938163fe301defad402dc9d18a6201daa90f23b235		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7360 10180 bytes

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