Malicious PDF — malware analysis report

Static analysis result for SHA-256 9280a8fc4701f5e7…

MALICIOUS

PDF

58.0 KB Created: 2020-08-07 09:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 847b2f5702e703c0994cfbb9fe69776b SHA-1: 5815c127d1844dabd2f15d0faca45e7605b54ab7 SHA-256: 9280a8fc4701f5e7c98b29d813dd1d0f057b8abdade2a041e41e753fa1233f19
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains text related to organic chemistry practice problems, suggesting a lure to entice users to click the malicious links. The presence of numerous PDF links and a redirector strongly indicates a phishing or credential harvesting attempt.

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=organic+chemistry+acid+base+practice+problems+with+answers+pdf
    • http://files.aifby.com/uploads/1/3/0/9/130969674/9d77d.pdf
    • http://files.setsunlimited.com/uploads/1/3/1/4/131408344/vawamobijozaxo-beraruzobikawer.pdf
    • http://files.michaelmackinomara.com/uploads/1/3/1/4/131453494/1934221.pdf
    • http://files.charbroilcatering.com/uploads/1/3/1/4/131406736/katijilebaja.pdf
    • http://files.sendbrandon.com/uploads/1/3/0/7/130775760/telupas.pdf
    • http://files.charbroilcatering.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/nufixojowaludipuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/gitupotuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2119/files/special_casting_process.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/45229781584.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/96079133231.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/50099156990.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/70676006685.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/odevzdn_bakalsk_prce_upol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/19983023963.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/kebowotosewadasuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/12748095925.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53635556436.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/80628033324.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_off00008948.bin
f3de9b9dcbbcb3c4fd3cc3b9eed050ef9e35142f7e4bf9db1c8838c1dfded5df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8948 5720 bytes
font_01_sfnt_off00009c95.bin
a23a9226a424965248b431a0e457d6a3f722cfcad627cd6d7305823a1416dcce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C95 15488 bytes
font_02_sfnt_off0000cbdd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDD 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.