Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04f8c3859e48519…

MALICIOUS

PDF

53.4 KB Created: 2020-08-09 00:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83140d30748330484b4591911080c289 SHA-1: a9574f34da353bce7bdc0ffde19d9fb37a8a02ce SHA-256: b04f8c3859e485191d2eaf332e4c69e2377f1a4c0374c5b1df4932ae5da4a0e6
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=download+asmaul+husna+pdf+1+lembar'. This URL is presented as a download link within the document body. The document also exhibits characteristics of a callback phishing lure, suggesting a social engineering attempt to trick the user into interacting further. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

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/pify?keyword=download+asmaul+husna+pdf+1+lembar
    • http://files.scfhca.org/uploads/1/3/1/4/131438245/8775722.pdf
    • http://rifibubom.comedyblockpartyent.com/uploads/1/3/0/8/130813765/1242775.pdf
    • http://files.delcoalliance.org/uploads/1/3/0/7/130775023/4cba8e008911bf.pdf
    • http://files.robinsonclarinets.com/uploads/1/3/1/4/131453114/6e43734.pdf
    • https://cdn.shopify.com/s/files/1/0439/9199/0430/files/66077551510.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/intermediate_accounting_spiceland_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5029/4687/files/da_form_5913.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/begum_rokeya_university_admission_circular_2020_20_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/vozenuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6935/8758/files/96232230342.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/pocket_maplestory_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/mugudabesunexiri.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/jerefari.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/18534293937.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/14347644283.pdf
    • https://cdn.shopify.com/s/files/1/0449/8895/6830/files/hiatal_hernia_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0443/2376/6428/files/technical_support_engineer_interview_questions_and_answers.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009633.bin
c0e56aee8a3657beac41178a7fc7f728c9aa8d23ee0cef3d167a6664104b25a1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9633 21116 bytes
font_00_sfnt_off000061fa.bin
aaa92c0cb4fe0fba3375050416d7a1d4f07bed6bda1c6e009596b01ab700acfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61FA 5316 bytes
font_01_sfnt_off000073ee.bin
1a66585cb522f6ba84a4d942b12c046f385c08526632141e977c6c20e63732f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EE 9964 bytes
font_03_sfnt_off0000ba1e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA1E 4324 bytes

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