Malicious PDF — malware analysis report

Static analysis result for SHA-256 010fb005390a8bcb…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 03:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97a7f90ccd0fe19b0eb390863ac59266 SHA-1: 320113ce30191712903bc01d30d67b4c558741e1 SHA-256: 010fb005390a8bcbbec3e725773f1bcb86b58f7bb7078f35038a1a6e66703555
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic. One prominent URL, 'https://ttraff.ru/pify?keyword=baixar+antivirus+avg+gratis+para+celular+android', is flagged as a malicious redirector, indicating a probable attempt to lead users to malicious content or phishing sites under the guise of offering free antivirus software. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=baixar+antivirus+avg+gratis+para+celular+android
    • http://dinarupok.deebeebooks.com/uploads/1/3/0/8/130813765/xiwowininivurome.pdf
    • http://files.ajbuilding.net/uploads/1/3/0/8/130815009/7384485.pdf
    • http://files.agapefreetractministry.com/uploads/1/3/1/4/131409024/50950bceb9.pdf
    • http://babego.lrse-nd.org/uploads/1/3/0/7/130739164/81c0e0e6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/lurowewuta.pdf
    • https://cdn.shopify.com/s/files/1/0431/8203/1007/files/migujekexadura.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/guest_speaker_introduction_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/56116118496.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9082/files/77609261881.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/22501018755.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/mepisazazefufitogu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/avg_pro_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/18898326887.pdf
    • https://cdn.shopify.com/s/files/1/0434/2808/5911/files/presupuesto_analitico_de_personal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/zupejiwixegegimodesosif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/titewovifupuzilix.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd9.bin
629a4e271372f8c087d77a4c349ddf200ec3a6c96aaebb7717c8ec31f615396d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD9 5420 bytes
font_01_sfnt_off00007e51.bin
0bd73b501bbbb840c7b59b4b92aa374a5b3d5b66f791899f83ae2dc67de81905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 10436 bytes

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