Malicious PDF — malware analysis report

Static analysis result for SHA-256 f487637863e5530f…

MALICIOUS

PDF

38.1 KB Created: 2020-08-02 03:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a89f621640f1f6e97d8d90d3f8e638f7 SHA-1: 23fe6885b4102689324435378a295181337ee2dc SHA-256: f487637863e5530f07ed1faf02b1e5bf03ff2799d562c863e8e3ec35333ac99f
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a large external PDF link farm, suggesting an attempt to manipulate search engine results or distribute spam. The presence of urgency language, though low-signal on its own, supports the malicious intent. No scripts were extracted from this sample.

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.cc/pify?keyword=smartparts+digital+picture+frame
    • http://files.reaspirenow.com/uploads/1/3/1/4/131452953/mowolubilinu-lofapino-buwikozar-vigugatezi.pdf
    • http://files.dicksmarketgardens.com/uploads/1/3/0/7/130738803/jikufolupo.pdf
    • http://files.juliasix.com/uploads/1/3/2/3/132302892/13c22af.pdf
    • https://cdn.shopify.com/s/files/1/0438/8634/6408/files/55728024306.pdf
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/sijujeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/jikajagixiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/61009947258.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/gilatejifaruvod.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/natilibatonerugovewozarap.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6985/files/30639693176.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/9206716596.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/78844630967.pdf
    • https://cdn.shopify.com/s/files/1/0439/0181/2904/files/wayne_grudem_systematic_theology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/94144245825.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/3690878589.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/62080265209.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_off00005718.bin
c01e8e8069f490714f88f36f692f8393b49c061c61be0270aba5a3032102392a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5718 5580 bytes
font_01_sfnt_off000069f3.bin
9e5daa0ac63b9a83bec711849868e43204074972446fc4179924157f2a9d07b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 9884 bytes