Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b44cd99ea4ec94…

MALICIOUS

PDF

47.2 KB Created: 2020-08-01 16:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e28a5c4ab384fcc690af881ea4ebb85 SHA-1: bf935c79a91aed8387a6d4da4f583a66be47fcb0 SHA-256: 43b44cd99ea4ec942ca45f1ef90145da512f39b42c17c3daa96d72e98661a08c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=ios+font+sizes, suggesting a lure related to iOS font sizes to entice clicks. The presence of numerous external links, including the malicious redirector, indicates a link farm or phishing attempt designed to lead users to malicious content.

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.com/pify?keyword=ios+font+sizes
    • http://files.estee-compliance.com/uploads/1/3/2/7/132740637/ganoxugarekunanoxu.pdf
    • http://files.itsnotstreaming.com/uploads/1/3/0/7/130738673/26071.pdf
    • http://files.englishappliedlinguistics.com/uploads/1/3/2/6/132681144/sevomotitu.pdf
    • http://files.motionxsynergy.com/uploads/1/3/0/7/130775228/6288533.pdf
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/42347685173.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/upc_check_digit.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/39061728323.pdf
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/bisan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/povojagameloxojoxokuwog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/92828113733.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerivavegexem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/84215616925.pdf
    • https://cdn.shopify.com/s/files/1/0438/1576/4128/files/35710087239.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4414/files/rijofig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/12789586390.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/tobepofokure.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/fetomepuluxanakasugixul.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_off000067af.bin
5b6d0f4361af54cc41873efc514b0616ccfcacff6a378a40cc143ee47e98c78a
pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 4408 bytes
font_01_sfnt_off000076ce.bin
0c053377a6f01f4579be876d5ea313e2bad7948dc75406942756a997d1a098d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x76CE 10300 bytes
font_02_sfnt_off00009a39.bin
4189bb5d82d37c3b06c761c00ca3b3c8a7a7312639514cd6a20481e76712d457
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A39 16388 bytes