Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4f798fde958cd3…

MALICIOUS

PDF

32.5 KB Created: 2020-08-13 02:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f00284b4722db30169666f7e1532052 SHA-1: afdfbbd86edcf1db5ca30b0fc92179f898df1f7d SHA-256: 9e4f798fde958cd3d2a3dd325c2f7db6ddc8055f450c18939f6fcada2d7761a5
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used to redirect users to malicious sites. One critical heuristic firing specifically flagged a link to a known malicious redirector. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.cc/pify?keyword=adara+keti+katha+pdf
    • http://files.thepowerhouseuk.com/uploads/1/3/2/6/132695862/5660009.pdf
    • http://files.saharjoakim.net/uploads/1/3/1/3/131383541/tususodibidaredadaz.pdf
    • http://files.theassertorsc.com/uploads/1/3/1/3/131379382/kelozidewumedifif.pdf
    • http://files.foldedcraneyoga.com/uploads/1/3/0/7/130775309/ginibetikanisa_bakuk_fabakizagem_sizezekaju.pdf
    • http://kusosibax.somethingblueplannings.com/uploads/1/3/1/4/131407668/zadibudopavejel.pdf
    • https://cdn.shopify.com/s/files/1/0432/6798/1476/files/28227891880.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/sidefojevaxexofu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/nurogomoroguwige.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3834/files/longman_academic_writing_series_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/peraxewikiwijilujejuboxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/survey_of_mathematics_with_applications.pdf
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/sports_psychology_articles_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/dolefovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2342/5955/files/29942618692.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/bhagavad_gita_book_telugu_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/brassage_gntique_au_cours_de_la_reproduction_sexue.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/fudiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1086/6851/files/temufufekixur.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/84998071.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_off000045c8.bin
b4403ab67fc32da924b59e605e709ad42316f2922a90b6dfa74032fd6ccdc5f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x45C8 4972 bytes
font_01_sfnt_off000056ab.bin
6340239a15bb4bb081c100d978ec10258202b980818207ac1b38dce94e51df0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x56AB 8868 bytes