Malicious PDF — malware analysis report

Static analysis result for SHA-256 011a51da0f48758f…

MALICIOUS

PDF

60.9 KB Created: 2020-07-09 20:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a938182bbca36fef86ee122515029239 SHA-1: 68045f05a52a2dde708ca402f8dd3feb77408e1a SHA-256: 011a51da0f48758ffa367bab335a017921b1fed950cac3a26153d35fe755080a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a primary redirector URL, designed to lead users to external websites. The document body, while partially obfuscated, mentions a topic related to PDF resizing and includes the primary malicious URL, suggesting a lure for phishing or malware delivery. The heuristic firings confirm the presence of malicious redirector links and a link farm, strongly indicating a malicious intent to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wb?keyword=how%20to%20resize%20pdf%20file%20in%20macbook
    • http://files.pamelarogalski.com/uploads/1/3/1/3/131398250/zugolinewiro.pdf
    • http://files.wallingfordphoto.club/uploads/1/3/1/3/131379252/medatugoji-lewupewezilo.pdf
    • http://files.mariettapilgrimage.com/uploads/1/3/0/7/130739120/livevofijebopaforaxo.pdf
    • http://files.theskinthatburns.com/uploads/1/3/1/1/131164534/f66e7e2f6bf.pdf
    • http://files.draumalandslabs.com/uploads/1/3/1/6/131606482/8069493.pdf
    • http://files.lessons-by-alex.com/uploads/1/3/2/7/132740692/gadaxopode.pdf
    • http://files.toadsoftowedhaul.com/uploads/1/3/2/8/132815752/2564212.pdf
    • http://files.ernst-arch.com/uploads/1/3/2/6/132695478/6256925.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://zofexokizixo.files.wordpress.com/2020/06/6806575164.pdf
    • https://korovite.files.wordpress.com/2020/06/dalexotata.pdf
    • https://gibewebor.files.wordpress.com/2020/06/70448523389.pdf
    • https://fivulenis.files.wordpress.com/2020/07/sijizak.pdf
    • https://zopowozofoje.files.wordpress.com/2020/06/vudebijirebo.pdf
    • https://zutomexarix.files.wordpress.com/2020/07/botizisunijolimumidosuje.pdf
    • https://ludofinat.files.wordpress.com/2020/07/85776368429.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tomazemajetel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musigusuwekun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b55.bin
d71bf38c922797e79ffc175f2adbc1f99057919d5e4408c40f077006d4a529b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B55 5396 bytes
font_01_sfnt_off00007d94.bin
4806191be12d7c1fd37210d8838376573ecc89c30c6157e06620955aad047c92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D94 13196 bytes
font_02_sfnt_off0000a242.bin
9b955e41fde9ae4ad79ff06c320e96b1dccd499450dd4bf2e727bd71822e1120		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA242 14524 bytes
font_03_sfnt_off0000d098.bin
f5e834e446a37b383cf0065db04bd7ae2a1fc034f9e6b9b3312d42a3fc9485cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD098 16116 bytes

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