Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b071ab2caaada1…

MALICIOUS

PDF

41.7 KB Created: 2020-07-19 02:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38b3fea7c85791dd99eab5f801af2135 SHA-1: 1d6b4a86e80d719f9a9ec1aa7a896907dae072aa SHA-256: 95b071ab2caaada1ac4a2409fa38ae6d3ad24da6d4412036aee3f69740cdb2b0
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The presence of a 'low' severity heuristic for a 'SE_DOWNLOAD_BUTTON' suggests a social engineering lure to trick users into clicking the malicious link, which is further supported by the document body containing text related to file conversion and download prompts.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=aplikasi%20convert%20word%20to%20pdf%20untuk%20pc
    • http://files.unwrappedmarketplace.com/uploads/1/3/1/8/131856852/rowupijagipuju_wezerenazigope_wimanugirere_sikenuluve.pdf
    • http://files.emaportfolio.com/uploads/1/3/1/6/131606281/pevudo.pdf
    • http://files.mazi-reisen.de/uploads/1/3/2/6/132682124/lijaru.pdf
    • http://files.veenalifestyle.org/uploads/1/3/1/4/131406288/sukosupaxudolow-zitepagufom-daxakewukilit.pdf
    • http://files.mazi-reisen.de/uploads/1/3/2/6/1326821
    • https://zabefaku.files.wordpress.com/2020/06/volebomenag.pdf
    • https://bivuwid.files.wordpress.com/2020/06/64868187621.pdf
    • https://guliteliz.files.wordpress.com/2020/07/72538276425.pdf
    • https://vawofomije194917598.files.wordpress.com/2020/06/dibudagukeji.pdf
    • https://wuwikejixep.files.wordpress.com/2020/07/rixuzamijupatugowobite.pdf
    • https://wepupip.files.wordpress.com/2020/07/lopivijusanijawitatorepu.pdf
    • https://tojesud.files.wordpress.com/2020/07/71471220044.pdf
    • https://tixuwujeseva.files.wordpress.com/2020/06/37501791640.pdf
    • https://ribixapisina.files.wordpress.com/2020/06/wuvusudixutenaxeta.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/gerisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/tebejepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/63017217416.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/bazipodatu.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_off0000654f.bin
2121d783aa76861370096f86977ee9623f6c6df9d2433e186412febd5ff9baf8
pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 5236 bytes
font_01_sfnt_off00007730.bin
23436afc61a3168254522fabf21460169db6822e21abd4a9b3e1c168ceed290f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 10088 bytes