Malicious PDF — malware analysis report

Static analysis result for SHA-256 5313a1071c590948…

MALICIOUS

PDF

34.7 KB Created: 2020-08-21 13:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e625ae98c06cc5ee325e463be2d5e08 SHA-1: 22a3af2b644b2e79e0de9a0ca3f73bc5edf78972 SHA-256: 5313a1071c5909480db02c809d2e67530181fa2fc292153c87198cb90c5a627f
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=lagu+alyah+mengapa+harus+aku'. This heuristic firing, combined with the presence of numerous other external PDF links, suggests a link farm or redirection scheme designed to lure users to malicious content. The document body, though heavily corrupted, contains fragments of the malicious URL, reinforcing the attack vector.

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=lagu+alyah+mengapa+harus+aku
    • http://kibuzu.nikospsaltopoulos.com/uploads/1/3/2/7/132712207/8734225.pdf
    • http://xuwiv.maggiezlatanova.com/uploads/1/3/1/3/131378814/vijixanixuwexe_sovajosegi_nasabaji.pdf
    • http://xajunuv.regisacademykc.org/uploads/1/3/1/3/131398140/tutivizijunid-fusiged-raweni-pudovexa.pdf
    • http://files.vibrant-energies.com/uploads/1/3/0/8/130873907/nomadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/32671348636.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/aptoide_older_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/4528/0161/files/estado_financiero_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/5206/4155/files/gunofewofeparomo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/63343619006.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/73709552833.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/tumunejijisut.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/einthusan_hd_movies_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/63688486405.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/52291452074.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/alkaline_foods_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0440/1109/4174/files/25100770276.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_off00004ad0.bin
a66e35afbb5258b2b426ccb82ab6fef7d6b856630c2a5f88bac575a3a0ff9206		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD0 5340 bytes
font_01_sfnt_off00005cdc.bin
85bbebedfedcb0122423f13692cd1bebf6038579bd61d2d673542a0fb271a44e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 9644 bytes

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