Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1fe944dceff318…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 03:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fc70329a0df4d2658ef73f7a98319e3 SHA-1: 31c549c5836af8a17eecadc10cdfad1ebc289787 SHA-256: ea1fe944dceff31879dd253e484b076916e30d17ef39e24e3463bed6d7fe478a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=energy+content+of+fuels+lab+report+answers'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also contains a link farm, indicating an attempt to manipulate search engine results or distribute multiple malicious links. The primary intent appears to be redirecting the user to a malicious site.

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.ru/pify?keyword=energy+content+of+fuels+lab+report+answers
    • http://files.sewchicinteriors.com/uploads/1/3/1/4/131438180/vodivulipukane.pdf
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdf
    • http://files.mommatschis.com/uploads/1/3/1/0/131071063/96aadb3c4795c5.pdf
    • http://negekusom.dckreider.com/uploads/1/3/1/4/131453247/6219290.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/32770780111.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/autism_spectrum_disorder_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6057/files/65358364284.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/bevusudepe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6961/0907/files/92174649517.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8022/files/wojetezojosiwuzupaxoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/tag_transtorno_de_ansiedade_generalizada.pdf
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/core_java_interview_questions_for_2_years_experience.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/54425188339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44329390643.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/sugoregagesugawilen.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/59687371483.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_off00007158.bin
225bb5659721e06e623b07870843bc472387148658ae61c107a360e7bd04c5cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7158 1664 bytes
font_01_sfnt_off0000794d.bin
9233c7cdad3550da4cd3c18d01d5ec2d58139213d18f3555a1dac804fa255f96
pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 5472 bytes
font_02_sfnt_off00008c15.bin
b794f6fc247898742b67932656d76feec7c6e4126af2fb536a2b36f50708908c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C15 15416 bytes