Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0137bc84ccb0ba…

MALICIOUS

PDF

48.5 KB Created: 2020-08-23 00:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42f99b4d7d0e9f3e4747e6fc7bec90cb SHA-1: 2bf155a4bd23de3d13f8329d7b5c45b026c51213 SHA-256: ae0137bc84ccb0baf4941300922f15d3baaada40499851573fac391b1958dba9
160 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a software utility, aiming to trick users into clicking it. The 'SE_CLICKFIX' heuristic indicates that the document likely instructs the user to execute a command, a common social engineering tactic to bypass security measures. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=abby+finereader+convert+pdf+to+word+online', which is linked to known malicious redirector infrastructure.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=abby+finereader+convert+pdf+to+word+online
    • http://koterit.catchyadreams.com/uploads/1/3/1/4/131453278/f2e473c.pdf
    • http://xidik.wheatgrasspublishing.com/uploads/1/3/2/6/132680981/e547940.pdf
    • http://luzosuz.vergaspageants.com/uploads/1/3/0/7/130775531/xetiborurezul-wegevom.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/digital_photogrammetry_theory_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/53565283798.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/gisiwof.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/massachusetts_springing_power_of_attorney_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/bitdefender_free_offline_installer.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/plural_of_sheep.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/46610194837.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/analise_fundamentalista_livro.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/adams_tax_forms.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/photoshop_2019_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/xowaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/72048952515.pdf
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/gopofilevunazesu.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_off00006c2c.bin
d0f49a4c3b7587d31285eb18244f306c83f66d9515b871b6824a8a3f2bda7d87
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2C 5140 bytes
font_01_sfnt_off00007dba.bin
fe1956de200077b558a564d5733a322253e96d1895268e512490d19610fbb179
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 13556 bytes
font_02_sfnt_off0000a617.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA617 4324 bytes