Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f182f36d901069…

MALICIOUS

PDF

63.6 KB Created: 2020-08-06 09:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4941016a2c337daa6121a5bdf6108d4a SHA-1: 688baabaa4ab0f3da1574dbc19af62827dcb2fa6 SHA-256: f3f182f36d901069bc9507bcb7d69de73022379fd4aa83a0163014c435c64df0
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.com/pify?keyword=shear+force+diagram+and+bending+moment+diagram+pdf`. This indicates a link farm or redirection strategy designed to obscure the final malicious destination. The document body, though heavily corrupted, contains the same technical-sounding title as the malicious URL, suggesting a lure to trick users into clicking the link. The primary attack pattern involves redirecting users to malicious infrastructure via a link farm.

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=shear+force+diagram+and+bending+moment+diagram+pdf
    • http://files.eleanorguerrerocampbell.com/uploads/1/3/0/8/130873794/5370811.pdf
    • http://files.wormfoodforthough.net/uploads/1/3/0/9/130969243/e9c22e71c4f8.pdf
    • http://files.insightofnewengland.com/uploads/1/3/1/4/131437322/6023611.pdf
    • http://seragizi.ledgerockpottery.com/uploads/1/3/1/8/131871745/xamonaxuzox_noruxugexigotev_gedudodob_pevuri.pdf
    • http://files.tanyasaatzerart.com/uploads/1/3/1/3/131379395/regefogifokurakixega.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/64309757955.pdf
    • https://cdn.shopify.com/s/files/1/0432/9567/0427/files/47803460254.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/jobiwirimozemovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/vakilewirofegezalowurili.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/bugurakaluri.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/drugs_used_in_critical_care_unit.pdf
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/criminal_psychology_navin_kumar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/migazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/jenawiwo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/guzudutap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/42136033067.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/kajama.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b8f.bin
638a030132555a37808590994cf97a25aeae76fdcbd7ace0264652ab7c0ac253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8F 5392 bytes
font_01_sfnt_off00009db3.bin
20a8de8372de3e353dae60a2060c698fe2f0ade8564f484287d70fe618464738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB3 15288 bytes
font_02_sfnt_off0000cdb8.bin
b204af4fc096a9d7fd13dbc2a1a4d218e6fe3f9057d90e415c01c33d5796febf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB8 16096 bytes
font_03_sfnt_off0000e284.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 4324 bytes

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