Malicious PDF — malware analysis report

Static analysis result for SHA-256 d57b14dc9a5cf4c3…

MALICIOUS

PDF

49.3 KB Created: 2020-08-17 01:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69ffa41977c086ff0a033cfbbf89ea60 SHA-1: 9e0e3f1a200728f48c75d0b7cf818007569854fd SHA-256: d57b14dc9a5cf4c3a5591dd9c2d4045985ec1088a1c2f21ca67fdddc34278d1d
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that appears to be a download for 'game tekken 2 for pc'. This link, however, redirects to a known malicious redirector at 'ttraff.com'. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. The presence of a visual download button heuristic further supports the lure-based attack pattern.

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=game+tekken+2+for+pc
    • http://files.cultivateyourwellness.org/uploads/1/3/1/0/131070674/garozukatok.pdf
    • http://files.seawatchingestaca.com/uploads/1/3/1/4/131437123/623fa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9709/5333/files/raruwirubenuravod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3432/8735/files/apush_themes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/70313331682.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/79414436690.pdf
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/tomorevotaxupanof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/sefifakobafov.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/spelling_bee_grade_2_word_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/tumeluzawutabidogewunix.pdf
    • https://cdn.shopify.com/s/files/1/0435/3445/0840/files/bulenodaduwokelowememit.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/32380846151.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/amsterdam_travel_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/xagitonegaretojabekasuda.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/agent_administratif_formation.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_off0000834d.bin
ee7e8f8fcd8d7699147140dbbd4f2dcd8c5a8bd94171856c2d45eb10a4a1e3c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x834D 5180 bytes
font_01_sfnt_off000094e2.bin
0e241fe3463cba6a358cc9cc4dd84d3f9b9707bf2d5280307f2cc1572075d516
pdf-font-stream PDF embedded font (sfnt) at offset 0x94E2 10544 bytes