Malicious PDF — malware analysis report

Static analysis result for SHA-256 961d0b46cbef802c…

MALICIOUS

PDF

48.8 KB Created: 2020-08-15 11:57:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7260110d716262a6eed8ec0d65757bc8 SHA-1: 71026a0a5d8e6b14a5f793e21ced20ee23ab94a5 SHA-256: 961d0b46cbef802c931261fbbdaacf64cbf50e9cfbebcac489923ef2f29feffa
140 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious domain, disguised as a recruitment document. The heuristic firings indicate that the PDF is designed to redirect users to malicious infrastructure and contains a mass external PDF link farm. The document body also contains a URL that matches the malicious redirector.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=nabard%20assistant%20recruitment%202019%20pdf%20download
    • http://files.rochonsandshall.com/uploads/1/3/1/0/131070294/3b84766.pdf
    • http://mexivo.hernarpchurch.com/uploads/1/3/0/7/130776208/vobopi.pdf
    • http://files.gregpicardandwendypicardgorham.com/uploads/1/3/1/4/131483201/80a29eaa6855.pdf
    • http://busataj.ltartsdesign.com/uploads/1/3/1/8/131856554/d337115576cf2.pdf
    • http://files.sincityimprovserial.com/uploads/1/3/2/6/132695839/jujibenedegoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/53758688518.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/zupejiwixegegimodesosif.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/fitiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/gevofigupafojove.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/49151276272.pdf
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/east_bay_purchase_agreement_addendum.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/chewing_gum_series.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/batman_killing_joke_comic.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/bachna_ae_haseeno_song.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/gigolatave.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/dunalisizunalideginile.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_off00007447.bin
7b36545a453e7c89506fe958fc4094535faf22e630be57c71241f4c4acbfa395
pdf-font-stream PDF embedded font (sfnt) at offset 0x7447 5984 bytes
font_01_sfnt_off000088a4.bin
f02c515b2d243e48d9773046c6fa569bae83f157aacde3cfd95354a9e30cf9bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x88A4 14500 bytes