Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd558a08d4cea03f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-26 16:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdcd8573efce32750bf61811e95ec4fe SHA-1: 14a2079b1b0bcd382b3915254858c49e54e9bcdd SHA-256: fd558a08d4cea03f167135adbc20b3b27a51f945aa7388ca5e2a67e21eff98a1
128 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 'ttraff.com'. It also exhibits a PDF link farm pattern, with numerous links hosted on Shopify. The document body, though partially corrupted, contains text related to 'addition and subtraction of decimals word problems pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of urgency language further supports a social engineering attack. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=addition+and+subtraction+of+decimals+word+problems+pdf
    • http://xonalove.vanityhairartistry.com/uploads/1/3/0/8/130874380/2804382.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/jexikuboxovepenigi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2147/4714/files/tawusuzatiborisawawipuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/estado_neoliberal_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/deficiencia_de_vitamina_k_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/reported_speech_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/friends_script.pdf
    • https://cdn.shopify.com/s/files/1/0436/5916/5849/files/bhojpuri_video_2016_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54058680795.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/66815071183.pdf
    • https://cdn.shopify.com/s/files/1/0433/5439/0687/files/78017609906.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/44425718840.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/zajaginidu.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_off00006676.bin
f78e085abce12d050b08942f62dd437dfda23c2c28c626f9d5a68c45c0722cf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 5404 bytes
font_01_sfnt_off000078c2.bin
6e6c1c5709f839197746d730223272a4e90e7fdaa1e8e2bccbbccbc3b03496c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x78C2 10580 bytes
font_02_sfnt_off00009ce0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE0 4324 bytes