Malicious PDF — malware analysis report

Static analysis result for SHA-256 4749313a91eccf59…

MALICIOUS

PDF

49.6 KB Created: 2020-07-29 08:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f05e706862522bdb0ce533df53b53d7 SHA-1: 3a7152d7175cac61c22d1f6dfac242f4878bc5a1 SHA-256: 4749313a91eccf59cc86ab5292eea4a6a6f420e6e6b3ced38d08971d39ddcb1a
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain urgency-related language, further supporting a phishing or social engineering attack. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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=chargesheet+meaning+in+finance
    • http://files.greenpig316.com/uploads/1/3/0/8/130813413/7755091.pdf
    • http://files.mylifetimetodos.com/uploads/1/3/1/6/131636990/2dd20637aff.pdf
    • http://files.proclean1.net/uploads/1/3/0/7/130776509/1565970.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/lixukafare.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/68135091392.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/givitebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/59442981050.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/83794976919.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/ketukabiwozagewikeni.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/zideguvila.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/96599547294.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/tikexozitadesomexewopato.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1126/files/zimoju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74808095599.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/86712067335.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/1/0428/4419/2935/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000864b.bin
3e533a0cca3ca4063ae4457a057d4c043bf7f6f0feb07ee250197f8c137d783b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x864B 4964 bytes
font_01_sfnt_off00009704.bin
5f2e2f6490de05315a5e199ce96faa97e4e20111ac56cd1a3595376a604e5909		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9704 10040 bytes

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