Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebef02cbb305dddf…

MALICIOUS

PDF

37.7 KB Created: 2020-08-10 13:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2cd45423694e4c32aa73e8d02bc0681 SHA-1: 00dca794de7291997b14dc3765b0a6e84fd13b1b SHA-256: ebef02cbb305dddf497c812f310617bdcdd12fac919374b591d0bde2b858fde0
130 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, many of which point to a link farm hosted on Shopify, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'blueprint 2 student book pdf' and a URL that appears to be part of a SEO spam campaign. The presence of numerous external links, including a malicious redirector, strongly suggests an attempt to lead the user to malicious content or phishing pages.

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=blueprint+2+student+book+pdf
    • http://jizinur.score-lab.net/uploads/1/3/1/4/131482952/nagazajop-sugexitowekit-tinarosof-kufetonuwul.pdf
    • http://files.deniserodgersbooks.com/uploads/1/3/1/3/131398100/tixutubaluzo.pdf
    • http://files.jointheteam.saintleoresidencelife.com/uploads/1/3/0/7/130740521/kabezenuki.pdf
    • http://files.djdoom1.com/uploads/1/3/0/7/130776065/fisusulirub_newidet_niwadodaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/16457889192.pdf
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/gokudebimegapiro.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/free_auditing_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/40921431633.pdf
    • https://cdn.shopify.com/s/files/1/0439/7511/4910/files/nelafivifof.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/86679878063.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6887/files/black_and_white_photography_magazine_may_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/turn_of_the_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/22941360073.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/boost_your_vocabulary_2_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/jepikite.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_off00005605.bin
2ac982c012b9ed17d348dea9e5768b89748bcbbe9933d79e302846d7bec748e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5605 5208 bytes
font_01_sfnt_off000067ce.bin
bb17fccc465db43f1eb33881d7ddaa9faff69bb7b791cc9bd3d6df168ae30b92
pdf-font-stream PDF embedded font (sfnt) at offset 0x67CE 10008 bytes