Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbba25b8322221b…

MALICIOUS

PDF

80.7 KB Created: 2021-02-21 03:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 35ece2ebc592547248fd4d4727e5bf23 SHA-1: 7597ff07760d5c157149a51e1c3ef9d9890ad346 SHA-256: 2dbba25b8322221b7ebd11174fe41d664f010f5190c1708bf1f3d33bb3b50d6d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://yafferge.ru/wix?keyword=wii+u+softmod+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on Weebly or AWS. The ML classifier and ClamAV also strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=wii+u+softmod+guide In PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/didijepalelekiwanoka.pdfIn PDF document text
    • https://golagunowij.weebly.com/uploads/1/3/2/6/132695575/jutoxo-zanunas.pdfIn PDF document text
    • https://xokekomoto.weebly.com/uploads/1/3/4/5/134598663/kotodem.pdfIn PDF document text
    • https://gamitodotabezoj.weebly.com/uploads/1/3/1/4/131453651/bakirikewixib.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/6226506.pdfIn PDF document text
    • https://manumuxalobo.weebly.com/uploads/1/3/5/3/135387638/keladitalo.pdfIn PDF document text
    • https://fowowudajij.weebly.com/uploads/1/3/5/3/135312379/viridipafinivapix.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/e096f07d48b9b04.pdfIn PDF document text
    • https://belijexulifowa.weebly.com/uploads/1/3/0/7/130738738/rokopizukafagukuxera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vinejivunitego/78810467991.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/41598404709.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/63450922030.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/riniwisozosilijarerake.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/finding_equivalent_fractions_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/free_yearbook_ad_templates_for_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/2004_polaris_atp_330_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/77454389393.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/rutufogidumosabeje.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/autumn_pictures_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/80489563931.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/86854511501.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C7 4676 bytes
SHA-256: 840cec3f74de8cec0a2b23cc88eb641656c2ad49aef83d4ac2f99e1e9dff6eda
font_01_sfnt_off000102ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CE 10704 bytes
SHA-256: 6e890a44a0ded3d6c94580c491ee515dd871ef0b8c78257b789a3ec931c0111b
font_02_sfnt_off0001274e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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