Malicious PDF — malware analysis report

Static analysis result for SHA-256 d381990a8cebd524…

MALICIOUS

PDF

48.6 KB Created: 2020-08-11 00:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a62d8c0f66d3fcf2c9979a5a15146e1 SHA-1: 82ed84022527185404ae7d6808c6b9bd01f12e24 SHA-256: d381990a8cebd524684083ea683f8a5868131f2d1a02b1967fc250a0f62e54d6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=the+definitive+arduino+uno+pinout+diagram+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, also contains the same redirector URL. This suggests the primary intent is to redirect the user to malicious infrastructure, potentially for phishing or malware distribution.

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=the+definitive+arduino+uno+pinout+diagram+pdf
    • http://files.daisymaeboutiqueshop.com/uploads/1/3/1/0/131069934/bumuf-lofamoletemir-fumezikefu-gifamiwemife.pdf
    • http://files.pimaboutique.com/uploads/1/3/1/6/131606490/3491662.pdf
    • http://jixape.copperhousecoffee.com/uploads/1/3/0/7/130775432/9382741.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/nemabisupitet.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/abdul_kalam_speech_to_school_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/xupubizesimigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/63030722726.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/56765658940.pdf
    • https://cdn.shopify.com/s/files/1/0451/2507/5109/files/abandono_de_idosos_em_asilos.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/41042342686.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.pdf
    • https://cdn.shopify.com/s/files/1/0437/7319/8497/files/rectas_y_angulos_primaria.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/poguwilepekigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27947700243.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/zavibip.pdf
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/60993930702.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/33733229151.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixuniji

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fc3.bin
914035032984dd4ab27def368f1685ee0ac30182fa5188638d6cfe2131e116aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC3 5252 bytes
font_01_sfnt_off00009180.bin
4ffd091e72e58a1bc97359fc71079ccb94cac60bc72a8974b9cdefd6c9efb7f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9180 10420 bytes