Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc77e7985e3fe086…

MALICIOUS

PDF

42.9 KB Created: 2020-08-05 05:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f476c70947095dcbc06ccfebc40d9536 SHA-1: eba893d782f58d2dddc9dcacc0792276fe340ace SHA-256: bc77e7985e3fe086218119ba764690b37f713c86b2da21af2f036fd2f21996e6
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body and embedded links suggest a lure related to exam papers, directing users to click a link that ultimately leads to the malicious URL https://ttraff.cc/pify?keyword=65th+bpsc+question+paper+pdf+set+a. This pattern is consistent with social engineering tactics to deliver malware or redirect to malicious sites.

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.cc/pify?keyword=65th+bpsc+question+paper+pdf+set+a
    • http://files.givegriefachance.com/uploads/1/3/1/6/131637240/juzapufuwezexat-bitepoxurura-zusulivofu-tasudojotames.pdf
    • http://files.nsi4africa.com/uploads/1/3/1/0/131070212/8d9e609a.pdf
    • http://files.wonderpupspetcare.com/uploads/1/3/1/4/131483361/sigaxit_wonolirofaj_tunaxisobiva.pdf
    • http://files.wildernessfamilies.org/uploads/1/3/0/8/130873728/biteg.pdf
    • http://files.kabirchopra.com/uploads/1/3/2/7/132740511/nasawilowazij.pdf
    • https://cdn.shopify.com/s/files/1/0428/4838/7239/files/fekisipejivabofu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/25739102231.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/rodajaviwafedol.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/6016863810.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/21450242110.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/folijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2261/files/the_a_team_ed_sheeran.pdf
    • https://cdn.shopify.com/s/files/1/0432/2043/5112/files/18252323800.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/84740026150.pdf
    • https://cdn.shopify.com/s/files/1/0435/4696/8218/files/naboxemol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0433/7896/6686/files/autodwg_dwg_to_converter_portable.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_off00006847.bin
aa8b0099ea1ed64915d5cbce6378f0805ad194f6409d6dc3ff509e3b39d4af20
pdf-font-stream PDF embedded font (sfnt) at offset 0x6847 5660 bytes
font_01_sfnt_off00007b79.bin
7606632b3e6e05bf7782dc707703264ec54c3b0d5e7ac4d01e87709b5da94b5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B79 10288 bytes