Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f5cad62f7f639f…

MALICIOUS

PDF

40.2 KB Created: 2020-08-19 22:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1500bbb3a5fec51f261c6c429ee504c SHA-1: d8d35e3b67becac78e637bee26cc838e1655b3c3 SHA-256: 48f5cad62f7f639f5adbe42537d7ad061d1b58a2a81ecab39b2a80ebda7c51de
128 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 'https://ttraff.com/pify?keyword=free+hockey+jersey+template+psd'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, with the primary one being 'https://cdn.shopify.com/s/files/1/0436/9409/6539/files/plural_of_mongoose.pdf'. The document body also contains a call-to-action phrase, reinforcing the lure. The combination of these factors suggests a phishing or scam attempt designed to redirect users to malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+hockey+jersey+template+psd
    • http://files.stain-goed.nl/uploads/1/3/2/8/132815050/acd600a270d088.pdf
    • http://files.eonmusic.co.uk/uploads/1/3/1/4/131438847/xovap.pdf
    • http://xebola.carvedtoadorn.com/uploads/1/3/1/3/131379578/zapejivivakaba.pdf
    • http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdf
    • http://files.khaolakdivecenter.com/uploads/1/3/1/4/131409597/daxuxez-wilefogo-kesetoxaw-lepijeduginunuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/9409/6539/files/plural_of_mongoose.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/active_and_passive_components_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/lawafuwerosuminixub.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/nuwebubifepi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/90780784084.pdf
    • https://cdn.shopify.com/s/files/1/0435/9428/5218/files/skyrim_se_lighting_mod.pdf
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/coliformes_totaux.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/58236373667.pdf
    • https://cdn.shopify.com/s/files/1/0435/8239/0435/files/taxi_harry_chapin.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_off00005dd8.bin
28444360840dc007c4e48754fccde2eee9dfa516b5cfea124f1ffcc6d34960b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 5512 bytes
font_01_sfnt_off00007082.bin
c9d962f9c9ba7cbbdbf67167ebee1170b009d440f9815bc64931bf013092c5ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 10488 bytes