Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11b58622e291914…

MALICIOUS

PDF

49.5 KB Created: 2020-08-19 03:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47c429251c0ad61eb4946b8ffc3c5542 SHA-1: ca093f8dfaca7c1cfb1c77cf543f93899e147bd9 SHA-256: e11b58622e2919142d716da6f0f453af4d6d35ed9639f6c5da85cacaf6b29c07
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though partially corrupted, suggests a lure related to translation dictionaries. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, resources.

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.cc/pify?keyword=bangla+to+english+translation+dictionary+free
    • http://files.rosalescbd.com/uploads/1/3/0/7/130739590/wutobomulalevobarow.pdf
    • http://toximuno.valiulis.com/uploads/1/3/1/3/131383791/8632241.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/58438107990.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/apache_poi.pdf
    • https://cdn.shopify.com/s/files/1/0436/2623/4009/files/ahmad_faraz_poetry_in_urdu_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/molibifalidabugusobap.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/costing_sheet_tcode.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/staphylococcus_aureus_virulence_factors.pdf
    • https://cdn.shopify.com/s/files/1/0438/5672/4128/files/39000120767.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/39192123166.pdf
    • https://cdn.shopify.com/s/files/1/0429/9168/1699/files/junovelizesupipovabesab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/sinukagokozemuranubidetu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d44.bin
a9331735e08871ef09fbd80fc55d8afb439c4ff53478641ab754275a5ee69134		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D44 5436 bytes
font_01_sfnt_off00006fb4.bin
1a857f79083b63ce8828d7311f3c5f79084fc8db2974153e64803d297280c386		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB4 12712 bytes
font_02_sfnt_off0000962b.bin
9e729d71e0e91ef84feaf8cbe00342aafcd8555bb48ebb621a7a0dac2fd59c4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x962B 10092 bytes

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