Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe61e3180149f08…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 21:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c981089414d96c3080cfac33adb5c9 SHA-1: d4cc56c8f692d145476e9d4ab6d7b56941b97fa8 SHA-256: dfe61e3180149f08981f66e4530e1f75814aea51df49c24ab7b15f2204899389
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one prominent link leading to a redirector service. This redirector is associated with malicious activity, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a 'Mi air purifier 2s manual pdf' and includes the malicious URL, reinforcing the lure. The presence of multiple external PDF links also indicates a link farm, a common tactic for SEO poisoning to attract victims.

Heuristics 3

  • 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.
  • 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=mi+air+purifier+2s+manual+pdf
    • http://files.judyssmallworld.com/uploads/1/3/1/6/131606206/1074433.pdf
    • http://files.autisticpridereading.co.uk/uploads/1/3/1/4/131482959/jetigogolepeji.pdf
    • http://files.41streetauto.com/uploads/1/3/0/7/130776775/jugaji-zizezajif-vominolojesetog-pivarolofipu.pdf
    • http://files.kaylacrance.com/uploads/1/3/0/7/130775518/a22aa421e928b6.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/10244397329.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/ap_bio_chapter_16_reading_guide_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5447/files/75642538580.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/20031988510.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/69006238129.pdf
    • https://cdn.shopify.com/s/files/1/0438/8870/5688/files/graco_nautilus_65_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/42054549707.pdf
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/chronic_back_pain_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/89742661859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/39304994083.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21800621301.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/83803350530.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.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_off000061d9.bin
14e390f157d0b31dba9b0b0b0625db2a1e936ec2434d7b36b4e4fddb02ccd294
pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 5324 bytes
font_01_sfnt_off000073e5.bin
291ea8de70877ebff028f4e54b6c49a4f13c9b8517bff0a2f4438c3d888aa3ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 10360 bytes