Malicious PDF — malware analysis report

Static analysis result for SHA-256 5344dbd2a2f130ab…

MALICIOUS

PDF

99.7 KB Created: 2020-07-20 21:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67a9fa4d049ef7473fda4dc78f5253db SHA-1: 870e1c5efcd7346aad8b572359eeb9e114bea059 SHA-256: 5344dbd2a2f130abecbcec23219db1b9bc48bdf21eb08b790f04e43aedd5873c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious URL identified is ttraff.cc, which likely serves as a gateway to further malicious content or phishing pages. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of a malicious redirector and link farm strongly suggests a delivery mechanism for malicious payloads or phishing attempts.

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=esp32+arduino+ide+pdf
    • http://files.charlottechinchristianchurch.com/uploads/1/3/1/4/131437792/c1f7c.pdf
    • http://files.punchlinemarketing.com/uploads/1/3/1/4/131437515/nakimibipukiv.pdf
    • http://files.wayinn.com/uploads/1/3/0/8/130874146/3676612.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/jemejazedusuramopuge.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/jipebabelinalexamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/pasalikijojezileda.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/zakinevumumudalasawefuki.pdf
    • https://zovotapalu.files.wordpress.com/2020/07/49653477511.pdf
    • https://diwonejivu.files.wordpress.com/2020/07/61527330292.pdf
    • https://zofedanevi.files.wordpress.com/2020/07/gaxexovatarawir.pdf
    • https://gigomeduwu257802433.files.wordpress.com/2020/07/mowevalazexamu.pdf
    • https://mavuwepezigi.files.wordpress.com/2020/06/xabajufovixubofulelimom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/berotipalo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/weludisitowukisojememejun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/refitapobofubogiwimubik.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/gamox.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/vuwiborasobajebowiba.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/fapiwokataxijilovozetipug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/43543747273.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/ketibot.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_off0001271f.bin
6b05841963cb411fb1f134a5c817c0d4f6ea0cd383612eff3d572b07c0b081f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271F 5060 bytes
font_01_sfnt_off0001384e.bin
b89db5df96d2bd4a8623036fdba340af90f59b01dbc661823b21a415394b3cc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1384E 16104 bytes
font_02_sfnt_off00016b76.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B76 16204 bytes

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