Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef93a28e7e5792b…

MALICIOUS

PDF

53.0 KB Created: 2020-08-09 15:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85957cf9ec0dca5cc96d2782c065113b SHA-1: 277a653a1e024500ff38c4bb0b977882a993351c SHA-256: 1ef93a28e7e5792bda2e8fa67179cade9a41c97b4b1feb966521756f86f2fa1c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=functions+maths+iit+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=functions+maths+iit+pdf
    • http://bopavefu.soecolumbia.com/uploads/1/3/0/9/130969352/nawowuxuwavip.pdf
    • http://files.flower-junction.com/uploads/1/3/1/8/131871677/tumodefili-wogegapizebuk-fazofafijav.pdf
    • http://files.caneriverchildren.org/uploads/1/3/0/7/130775484/mexan_lamixunesit_tujenunixo_runiwi.pdf
    • http://files.christianlisker.com/uploads/1/3/1/4/131453870/5be2971.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/guia_berlin_lonely_planet_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/voltage_regulator_using_zener_diode.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/keposawemuzebiboz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/jivak.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/katowefesenibekuwezod.pdf
    • https://cdn.shopify.com/s/files/1/0436/1427/3698/files/82090060342.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/rf_to_fe_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/84252219046.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/gafibizesawotizetedano.pdf
    • https://cdn.shopify.com/s/files/1/0430/6255/8874/files/gelojawujazudamevovinijog.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/mibefalunepekomipi.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_off0000719b.bin
1383e017c2bbbad10d70f88fd53068c0356fbd3fea6ee0bb4defb2f4b4296058
pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 5224 bytes
font_01_sfnt_off00008346.bin
ba5229fe5a7b3227235455a661e7405f44916391c5ad13f3bcaf394ace120684
pdf-font-stream PDF embedded font (sfnt) at offset 0x8346 14336 bytes
font_02_sfnt_off0000b08b.bin
e8cb11c66b9da036f5046388ecc2467d4131a8070a5cdd0d583845b767b493fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xB08B 16420 bytes