Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe416449a9d8449…

MALICIOUS

PDF

44.5 KB Created: 2020-08-08 14:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5211fe7fc3886501b47c0607553d292 SHA-1: dcb45cde044ee782eb69877c11fd2277c2a7e534 SHA-256: bbe416449a9d8449bf4b1cc486a6681566a0cf6c71c40b15cbb3144f13fc7930
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.com/pify?keyword=concept+of+sustainable+development+in+nigeria+pdf, which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=concept+of+sustainable+development+in+nigeria+pdf
    • http://files.lifeteaa.com/uploads/1/3/1/4/131437775/tijixuj.pdf
    • http://files.americanindianbandmusic.com/uploads/1/3/0/7/130775922/49365d.pdf
    • http://files.betterbodiesgympattaya.com/uploads/1/3/0/7/130738607/jisuvap_liraxaset_zukonik_wubevatonaxo.pdf
    • http://files.acmec.org/uploads/1/3/0/7/130775432/pirakelojiwasevopore.pdf
    • http://pizubexu.flfifedrum.com/uploads/1/3/1/8/131856257/zimoren_butod_budefop_nefan.pdf
    • https://cdn.shopify.com/s/files/1/0430/2441/6931/files/jaridi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/flujo_de_energia_cadenas_troficas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/setixinojed.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/tirenarose.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/merchant_of_venice_act_3_summary.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/coffee_fermentation.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/plantronics_backbeat_fit_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/0642/5249/files/557696254.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/77977552252.pdf
    • https://cdn.shopify.com/s/files/1/0430/2327/0042/files/86267572146.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3535/files/zonowurimobuvedeweki.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_off00006fa8.bin
694f835b7f059edd3ab485da0a8b455e18a6facc3a761088058cd7d18d116aba
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 5580 bytes
font_01_sfnt_off0000828e.bin
ecdad598f39e89599bf714203a9aa00b09f8378f3b124ac8f78ece7b1e8e76a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 10132 bytes